From 358f9a77a668660729e705fde9c3cf69f013aa98 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 25 Mar 2008 12:22:47 +0900 Subject: [PATCH] libata: implement and use ata_noop_irq_clear() ->irq_clear() is used to clear IRQ bit of a SFF controller and isn't useful for drivers which don't use libata SFF HSM implementation. However, it's a required callback and many drivers implement their own noop version as placeholder. This patch implements ata_noop_irq_clear and use it to replace those custom placeholders. Also, SFF drivers which don't support BMDMA don't need to use ata_bmdma_irq_clear(). It becomes noop if BMDMA address isn't initialized. Convert them to use ata_noop_irq_clear(). Signed-off-by: Tejun Heo --- drivers/ata/ahci.c | 12 +++--------- drivers/ata/libata-core.c | 1 + drivers/ata/libata-sff.c | 8 ++++++++ drivers/ata/pata_ali.c | 2 +- drivers/ata/pata_at32.c | 7 +------ drivers/ata/pata_icside.c | 7 +------ drivers/ata/pata_isapnp.c | 2 +- drivers/ata/pata_ixp4xx_cf.c | 2 +- drivers/ata/pata_legacy.c | 22 +++++++++++----------- drivers/ata/pata_mpc52xx.c | 2 +- drivers/ata/pata_mpiix.c | 2 +- drivers/ata/pata_ns87410.c | 2 +- drivers/ata/pata_pcmcia.c | 4 ++-- drivers/ata/pata_platform.c | 2 +- drivers/ata/pata_qdi.c | 4 ++-- drivers/ata/pata_rb500_cf.c | 6 +----- drivers/ata/pata_winbond.c | 2 +- drivers/ata/pdc_adma.c | 8 +------- drivers/ata/sata_fsl.c | 7 +------ drivers/ata/sata_inic162x.c | 7 +------ drivers/ata/sata_mv.c | 11 +++-------- drivers/ata/sata_qstor.c | 8 +------- drivers/ata/sata_sil24.c | 8 +------- include/linux/libata.h | 1 + 24 files changed, 47 insertions(+), 90 deletions(-) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 1bd258e5390f..492e521715d6 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -244,7 +244,6 @@ static int ahci_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val); static int ahci_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val); static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); static unsigned int ahci_qc_issue(struct ata_queued_cmd *qc); -static void ahci_irq_clear(struct ata_port *ap); static int ahci_port_start(struct ata_port *ap); static void ahci_port_stop(struct ata_port *ap); static void ahci_tf_read(struct ata_port *ap, struct ata_taskfile *tf); @@ -307,7 +306,7 @@ static const struct ata_port_operations ahci_ops = { .qc_prep = ahci_qc_prep, .qc_issue = ahci_qc_issue, - .irq_clear = ahci_irq_clear, + .irq_clear = ata_noop_irq_clear, .scr_read = ahci_scr_read, .scr_write = ahci_scr_write, @@ -343,7 +342,7 @@ static const struct ata_port_operations ahci_vt8251_ops = { .qc_prep = ahci_qc_prep, .qc_issue = ahci_qc_issue, - .irq_clear = ahci_irq_clear, + .irq_clear = ata_noop_irq_clear, .scr_read = ahci_scr_read, .scr_write = ahci_scr_write, @@ -377,7 +376,7 @@ static const struct ata_port_operations ahci_p5wdh_ops = { .qc_prep = ahci_qc_prep, .qc_issue = ahci_qc_issue, - .irq_clear = ahci_irq_clear, + .irq_clear = ata_noop_irq_clear, .scr_read = ahci_scr_read, .scr_write = ahci_scr_write, @@ -1769,11 +1768,6 @@ static void ahci_port_intr(struct ata_port *ap) } } -static void ahci_irq_clear(struct ata_port *ap) -{ - /* TODO */ -} - static irqreturn_t ahci_interrupt(int irq, void *dev_instance) { struct ata_host *host = dev_instance; diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 4dc429fd0056..394edf937cf2 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -7824,6 +7824,7 @@ EXPORT_SYMBOL_GPL(ata_noop_qc_prep); EXPORT_SYMBOL_GPL(ata_bmdma_setup); EXPORT_SYMBOL_GPL(ata_bmdma_start); EXPORT_SYMBOL_GPL(ata_bmdma_irq_clear); +EXPORT_SYMBOL_GPL(ata_noop_irq_clear); EXPORT_SYMBOL_GPL(ata_bmdma_status); EXPORT_SYMBOL_GPL(ata_bmdma_stop); EXPORT_SYMBOL_GPL(ata_bmdma_freeze); diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 20dc572fb45a..1cf03d41aa33 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -302,6 +302,14 @@ void ata_bmdma_irq_clear(struct ata_port *ap) iowrite8(ioread8(mmio + ATA_DMA_STATUS), mmio + ATA_DMA_STATUS); } +/** + * ata_noop_irq_clear - Noop placeholder for irq_clear + * @ap: Port associated with this ATA transaction. + */ +void ata_noop_irq_clear(struct ata_port *ap) +{ +} + /** * ata_bmdma_status - Read PCI IDE BMDMA status * @ap: Port associated with this ATA transaction. diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c index 3814aebefb2d..84b748aef386 100644 --- a/drivers/ata/pata_ali.c +++ b/drivers/ata/pata_ali.c @@ -380,7 +380,7 @@ static struct ata_port_operations ali_early_port_ops = { .data_xfer = ata_data_xfer, .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, diff --git a/drivers/ata/pata_at32.c b/drivers/ata/pata_at32.c index db057b183d60..27c959f35c2c 100644 --- a/drivers/ata/pata_at32.c +++ b/drivers/ata/pata_at32.c @@ -166,11 +166,6 @@ static void pata_at32_set_piomode(struct ata_port *ap, struct ata_device *adev) } } -static void pata_at32_irq_clear(struct ata_port *ap) -{ - /* No DMA controller yet */ -} - static struct scsi_host_template at32_sht = { .module = THIS_MODULE, .name = DRV_NAME, @@ -208,7 +203,7 @@ static struct ata_port_operations at32_port_ops = { .data_xfer = ata_data_xfer, - .irq_clear = pata_at32_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, diff --git a/drivers/ata/pata_icside.c b/drivers/ata/pata_icside.c index f97068be2d79..e1230cae7ff1 100644 --- a/drivers/ata/pata_icside.c +++ b/drivers/ata/pata_icside.c @@ -322,11 +322,6 @@ static struct scsi_host_template pata_icside_sht = { .bios_param = ata_std_bios_param, }; -/* wish this was exported from libata-core */ -static void ata_dummy_noret(struct ata_port *port) -{ -} - static void pata_icside_postreset(struct ata_link *link, unsigned int *classes) { struct ata_port *ap = link->ap; @@ -380,7 +375,7 @@ static struct ata_port_operations pata_icside_port_ops = { .error_handler = pata_icside_error_handler, .post_internal_cmd = pata_icside_bmdma_stop, - .irq_clear = ata_dummy_noret, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .bmdma_stop = pata_icside_bmdma_stop, diff --git a/drivers/ata/pata_isapnp.c b/drivers/ata/pata_isapnp.c index 4320e7986321..ef561de0c24d 100644 --- a/drivers/ata/pata_isapnp.c +++ b/drivers/ata/pata_isapnp.c @@ -55,7 +55,7 @@ static struct ata_port_operations isapnp_port_ops = { .data_xfer = ata_data_xfer, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c index 030878fedeb5..83e38cc077e1 100644 --- a/drivers/ata/pata_ixp4xx_cf.c +++ b/drivers/ata/pata_ixp4xx_cf.c @@ -126,7 +126,7 @@ static struct ata_port_operations ixp4xx_port_ops = { .cable_detect = ata_cable_40wire, .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_port_start, diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c index 50fe08ebe23c..6ac02f7d5289 100644 --- a/drivers/ata/pata_legacy.c +++ b/drivers/ata/pata_legacy.c @@ -252,7 +252,7 @@ static struct ata_port_operations simple_port_ops = { .data_xfer = ata_data_xfer_noirq, .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -279,7 +279,7 @@ static struct ata_port_operations legacy_port_ops = { .data_xfer = ata_data_xfer_noirq, .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -393,7 +393,7 @@ static struct ata_port_operations pdc20230_port_ops = { .data_xfer = pdc_data_xfer_vlb, .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -447,7 +447,7 @@ static struct ata_port_operations ht6560a_port_ops = { .data_xfer = ata_data_xfer, /* Check vlb/noirq */ .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -512,7 +512,7 @@ static struct ata_port_operations ht6560b_port_ops = { .data_xfer = ata_data_xfer, /* FIXME: Check 32bit and noirq */ .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -633,7 +633,7 @@ static struct ata_port_operations opti82c611a_port_ops = { .data_xfer = ata_data_xfer, .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -765,7 +765,7 @@ static struct ata_port_operations opti82c46x_port_ops = { .data_xfer = ata_data_xfer, .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -950,7 +950,7 @@ static struct ata_port_operations qdi6500_port_ops = { .data_xfer = vlb32_data_xfer, .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -977,7 +977,7 @@ static struct ata_port_operations qdi6580_port_ops = { .data_xfer = vlb32_data_xfer, .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -1004,7 +1004,7 @@ static struct ata_port_operations qdi6580dp_port_ops = { .data_xfer = vlb32_data_xfer, .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -1095,7 +1095,7 @@ static struct ata_port_operations winbond_port_ops = { .data_xfer = vlb32_data_xfer, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, diff --git a/drivers/ata/pata_mpc52xx.c b/drivers/ata/pata_mpc52xx.c index 5413ebfa72e5..d84e0c8ea02f 100644 --- a/drivers/ata/pata_mpc52xx.c +++ b/drivers/ata/pata_mpc52xx.c @@ -296,7 +296,7 @@ static struct ata_port_operations mpc52xx_ata_port_ops = { .qc_prep = ata_qc_prep, .qc_issue = ata_qc_issue_prot, .data_xfer = ata_data_xfer, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_port_start, }; diff --git a/drivers/ata/pata_mpiix.c b/drivers/ata/pata_mpiix.c index c0d9e0cf208c..ced6372749b3 100644 --- a/drivers/ata/pata_mpiix.c +++ b/drivers/ata/pata_mpiix.c @@ -187,7 +187,7 @@ static struct ata_port_operations mpiix_port_ops = { .qc_issue = mpiix_qc_issue_prot, .data_xfer = ata_data_xfer, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, diff --git a/drivers/ata/pata_ns87410.c b/drivers/ata/pata_ns87410.c index 9fe66fd75017..d182bdf31ee1 100644 --- a/drivers/ata/pata_ns87410.c +++ b/drivers/ata/pata_ns87410.c @@ -182,7 +182,7 @@ static struct ata_port_operations ns87410_port_ops = { .data_xfer = ata_data_xfer, .irq_handler = ata_interrupt, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, diff --git a/drivers/ata/pata_pcmcia.c b/drivers/ata/pata_pcmcia.c index 3e7f6a9da28b..9881a9e004a4 100644 --- a/drivers/ata/pata_pcmcia.c +++ b/drivers/ata/pata_pcmcia.c @@ -164,7 +164,7 @@ static struct ata_port_operations pcmcia_port_ops = { .data_xfer = ata_data_xfer_noirq, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -189,7 +189,7 @@ static struct ata_port_operations pcmcia_8bit_port_ops = { .data_xfer = ata_data_xfer_8bit, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, diff --git a/drivers/ata/pata_platform.c b/drivers/ata/pata_platform.c index aad7adc6ea56..a8429f5c3006 100644 --- a/drivers/ata/pata_platform.c +++ b/drivers/ata/pata_platform.c @@ -86,7 +86,7 @@ static struct ata_port_operations pata_platform_port_ops = { .data_xfer = ata_data_xfer_noirq, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_dummy_ret0, diff --git a/drivers/ata/pata_qdi.c b/drivers/ata/pata_qdi.c index 9f308ed76cc8..60238d5748a7 100644 --- a/drivers/ata/pata_qdi.c +++ b/drivers/ata/pata_qdi.c @@ -191,7 +191,7 @@ static struct ata_port_operations qdi6500_port_ops = { .data_xfer = qdi_data_xfer, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, @@ -217,7 +217,7 @@ static struct ata_port_operations qdi6580_port_ops = { .data_xfer = qdi_data_xfer, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, diff --git a/drivers/ata/pata_rb500_cf.c b/drivers/ata/pata_rb500_cf.c index 4ce9b03fe6c8..08c32af1c84d 100644 --- a/drivers/ata/pata_rb500_cf.c +++ b/drivers/ata/pata_rb500_cf.c @@ -117,10 +117,6 @@ static irqreturn_t rb500_pata_irq_handler(int irq, void *dev_instance) return IRQ_HANDLED; } -static void rb500_pata_irq_clear(struct ata_port *ap) -{ -} - static int rb500_pata_port_start(struct ata_port *ap) { return 0; @@ -144,7 +140,7 @@ static struct ata_port_operations rb500_pata_port_ops = { .error_handler = ata_bmdma_error_handler, .irq_handler = rb500_pata_irq_handler, - .irq_clear = rb500_pata_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = rb500_pata_port_start, diff --git a/drivers/ata/pata_winbond.c b/drivers/ata/pata_winbond.c index 99c92eda217b..5318248782bb 100644 --- a/drivers/ata/pata_winbond.c +++ b/drivers/ata/pata_winbond.c @@ -159,7 +159,7 @@ static struct ata_port_operations winbond_port_ops = { .data_xfer = winbond_data_xfer, - .irq_clear = ata_bmdma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = ata_sff_port_start, diff --git a/drivers/ata/pdc_adma.c b/drivers/ata/pdc_adma.c index 8e1b7e9c0ae4..bc2d12a2da30 100644 --- a/drivers/ata/pdc_adma.c +++ b/drivers/ata/pdc_adma.c @@ -138,7 +138,6 @@ static unsigned int adma_qc_issue(struct ata_queued_cmd *qc); static int adma_check_atapi_dma(struct ata_queued_cmd *qc); static void adma_bmdma_stop(struct ata_queued_cmd *qc); static u8 adma_bmdma_status(struct ata_port *ap); -static void adma_irq_clear(struct ata_port *ap); static void adma_freeze(struct ata_port *ap); static void adma_thaw(struct ata_port *ap); static void adma_error_handler(struct ata_port *ap); @@ -174,7 +173,7 @@ static const struct ata_port_operations adma_ata_ops = { .freeze = adma_freeze, .thaw = adma_thaw, .error_handler = adma_error_handler, - .irq_clear = adma_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .port_start = adma_port_start, .port_stop = adma_port_stop, @@ -223,11 +222,6 @@ static u8 adma_bmdma_status(struct ata_port *ap) return 0; } -static void adma_irq_clear(struct ata_port *ap) -{ - /* nothing */ -} - static void adma_reset_engine(struct ata_port *ap) { void __iomem *chan = ADMA_PORT_REGS(ap); diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index d23b690ed1a1..031a512cbaa8 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -933,11 +933,6 @@ static void sata_fsl_post_internal_cmd(struct ata_queued_cmd *qc) } } -static void sata_fsl_irq_clear(struct ata_port *ap) -{ - /* unused */ -} - static void sata_fsl_error_intr(struct ata_port *ap) { struct ata_link *link = &ap->link; @@ -1223,7 +1218,7 @@ static const struct ata_port_operations sata_fsl_ops = { .qc_prep = sata_fsl_qc_prep, .qc_issue = sata_fsl_qc_issue, - .irq_clear = sata_fsl_irq_clear, + .irq_clear = ata_noop_irq_clear, .scr_read = sata_fsl_scr_read, .scr_write = sata_fsl_scr_write, diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c index 59e65edc5820..74f14369dc8d 100644 --- a/drivers/ata/sata_inic162x.c +++ b/drivers/ata/sata_inic162x.c @@ -266,11 +266,6 @@ static u8 inic_bmdma_status(struct ata_port *ap) return ATA_DMA_INTR; } -static void inic_irq_clear(struct ata_port *ap) -{ - /* noop */ -} - static void inic_host_intr(struct ata_port *ap) { void __iomem *port_base = inic_port_base(ap); @@ -555,7 +550,7 @@ static struct ata_port_operations inic_port_ops = { .bmdma_stop = inic_bmdma_stop, .bmdma_status = inic_bmdma_status, - .irq_clear = inic_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .qc_prep = ata_qc_prep, diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index a4944c8ad46d..b3b3da4eaa03 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -461,7 +461,6 @@ struct mv_hw_ops { void (*reset_bus)(struct ata_host *host, void __iomem *mmio); }; -static void mv_irq_clear(struct ata_port *ap); static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val); static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val); static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val); @@ -564,7 +563,7 @@ static const struct ata_port_operations mv5_ops = { .qc_issue = mv_qc_issue, .data_xfer = ata_data_xfer, - .irq_clear = mv_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .error_handler = mv_error_handler, @@ -592,7 +591,7 @@ static const struct ata_port_operations mv6_ops = { .qc_issue = mv_qc_issue, .data_xfer = ata_data_xfer, - .irq_clear = mv_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .error_handler = mv_error_handler, @@ -620,7 +619,7 @@ static const struct ata_port_operations mv_iie_ops = { .qc_issue = mv_qc_issue, .data_xfer = ata_data_xfer, - .irq_clear = mv_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .error_handler = mv_error_handler, @@ -801,10 +800,6 @@ static inline int mv_get_hc_count(unsigned long port_flags) return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1); } -static void mv_irq_clear(struct ata_port *ap) -{ -} - static void mv_set_edma_ptrs(void __iomem *port_mmio, struct mv_host_priv *hpriv, struct mv_port_priv *pp) diff --git a/drivers/ata/sata_qstor.c b/drivers/ata/sata_qstor.c index 91cc12c82040..3c8e97f251f9 100644 --- a/drivers/ata/sata_qstor.c +++ b/drivers/ata/sata_qstor.c @@ -121,7 +121,6 @@ static unsigned int qs_qc_issue(struct ata_queued_cmd *qc); static int qs_check_atapi_dma(struct ata_queued_cmd *qc); static void qs_bmdma_stop(struct ata_queued_cmd *qc); static u8 qs_bmdma_status(struct ata_port *ap); -static void qs_irq_clear(struct ata_port *ap); static void qs_freeze(struct ata_port *ap); static void qs_thaw(struct ata_port *ap); static void qs_error_handler(struct ata_port *ap); @@ -157,7 +156,7 @@ static const struct ata_port_operations qs_ata_ops = { .freeze = qs_freeze, .thaw = qs_thaw, .error_handler = qs_error_handler, - .irq_clear = qs_irq_clear, + .irq_clear = ata_noop_irq_clear, .irq_on = ata_irq_on, .scr_read = qs_scr_read, .scr_write = qs_scr_write, @@ -211,11 +210,6 @@ static u8 qs_bmdma_status(struct ata_port *ap) return 0; } -static void qs_irq_clear(struct ata_port *ap) -{ - /* nothing */ -} - static inline void qs_enter_reg_mode(struct ata_port *ap) { u8 __iomem *chan = qs_mmio_base(ap->host) + (ap->port_no * 0x4000); diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c index ba0c00e8ee7f..b85464d51f68 100644 --- a/drivers/ata/sata_sil24.c +++ b/drivers/ata/sata_sil24.c @@ -348,7 +348,6 @@ static void sil24_tf_read(struct ata_port *ap, struct ata_taskfile *tf); static int sil24_qc_defer(struct ata_queued_cmd *qc); static void sil24_qc_prep(struct ata_queued_cmd *qc); static unsigned int sil24_qc_issue(struct ata_queued_cmd *qc); -static void sil24_irq_clear(struct ata_port *ap); static void sil24_pmp_attach(struct ata_port *ap); static void sil24_pmp_detach(struct ata_port *ap); static void sil24_freeze(struct ata_port *ap); @@ -416,7 +415,7 @@ static const struct ata_port_operations sil24_ops = { .qc_prep = sil24_qc_prep, .qc_issue = sil24_qc_issue, - .irq_clear = sil24_irq_clear, + .irq_clear = ata_noop_irq_clear, .scr_read = sil24_scr_read, .scr_write = sil24_scr_write, @@ -921,11 +920,6 @@ static unsigned int sil24_qc_issue(struct ata_queued_cmd *qc) return 0; } -static void sil24_irq_clear(struct ata_port *ap) -{ - /* unused */ -} - static void sil24_pmp_attach(struct ata_port *ap) { sil24_config_pmp(ap, 1); diff --git a/include/linux/libata.h b/include/linux/libata.h index 9476a479691b..639298af583e 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -896,6 +896,7 @@ extern void ata_bmdma_start(struct ata_queued_cmd *qc); extern void ata_bmdma_stop(struct ata_queued_cmd *qc); extern u8 ata_bmdma_status(struct ata_port *ap); extern void ata_bmdma_irq_clear(struct ata_port *ap); +extern void ata_noop_irq_clear(struct ata_port *ap); extern void ata_bmdma_freeze(struct ata_port *ap); extern void ata_bmdma_thaw(struct ata_port *ap); extern void ata_bmdma_drive_eh(struct ata_port *ap, ata_prereset_fn_t prereset, -- 2.39.2