ARM: iop: don't use using 64-bit DMA masks

BugLink: https://bugs.launchpad.net/bugs/1838459
[ Upstream commit 2125801ccce19249708ca3245d48998e70569ab8 ]

clang warns about statically defined DMA masks from the DMA_BIT_MASK
macro with length 64:

 arch/arm/mach-iop13xx/setup.c:303:35: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
 static u64 iop13xx_adma_dmamask = DMA_BIT_MASK(64);
                                  ^~~~~~~~~~~~~~~~
 include/linux/dma-mapping.h:141:54: note: expanded from macro 'DMA_BIT_MASK'
 #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                      ^ ~~~

The ones in iop shouldn't really be 64 bit masks, so changing them
to what the driver can support avoids the warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/arch/arm/mach-iop13xx/setup.c b/arch/arm/mach-iop13xx/setup.c
index 53c316f7301e69fcbebbfe5d73bb48664180f5b6..fe4932fda01d7d0bc819c0ca4e6dcedb6b061081 100644 (file)
--- a/arch/arm/mach-iop13xx/setup.c
+++ b/arch/arm/mach-iop13xx/setup.c
@@ -300,7 +300,7 @@ static struct resource iop13xx_adma_2_resources[] = {
        }
 };
 
-static u64 iop13xx_adma_dmamask = DMA_BIT_MASK(64);
+static u64 iop13xx_adma_dmamask = DMA_BIT_MASK(32);
 static struct iop_adma_platform_data iop13xx_adma_0_data = {
        .hw_id = 0,
        .pool_size = PAGE_SIZE,
@@ -324,7 +324,7 @@ static struct platform_device iop13xx_adma_0_channel = {
        .resource = iop13xx_adma_0_resources,
        .dev = {
                .dma_mask = &iop13xx_adma_dmamask,
-               .coherent_dma_mask = DMA_BIT_MASK(64),
+               .coherent_dma_mask = DMA_BIT_MASK(32),
                .platform_data = (void *) &iop13xx_adma_0_data,
        },
 };
@@ -336,7 +336,7 @@ static struct platform_device iop13xx_adma_1_channel = {
        .resource = iop13xx_adma_1_resources,
        .dev = {
                .dma_mask = &iop13xx_adma_dmamask,
-               .coherent_dma_mask = DMA_BIT_MASK(64),
+               .coherent_dma_mask = DMA_BIT_MASK(32),
                .platform_data = (void *) &iop13xx_adma_1_data,
        },
 };
@@ -348,7 +348,7 @@ static struct platform_device iop13xx_adma_2_channel = {
        .resource = iop13xx_adma_2_resources,
        .dev = {
                .dma_mask = &iop13xx_adma_dmamask,
-               .coherent_dma_mask = DMA_BIT_MASK(64),
+               .coherent_dma_mask = DMA_BIT_MASK(32),
                .platform_data = (void *) &iop13xx_adma_2_data,
        },
 };

diff --git a/arch/arm/mach-iop13xx/tpmi.c b/arch/arm/mach-iop13xx/tpmi.c
index db511ec2b1df6824cb6d3d24659cfebe2428d5ec..116feb6b261eb7b0e08ee7ce248e44682e537898 100644 (file)
--- a/arch/arm/mach-iop13xx/tpmi.c
+++ b/arch/arm/mach-iop13xx/tpmi.c
@@ -152,7 +152,7 @@ static struct resource iop13xx_tpmi_3_resources[] = {
        }
 };
 
-u64 iop13xx_tpmi_mask = DMA_BIT_MASK(64);
+u64 iop13xx_tpmi_mask = DMA_BIT_MASK(32);
 static struct platform_device iop13xx_tpmi_0_device = {
        .name = "iop-tpmi",
        .id = 0,
@@ -160,7 +160,7 @@ static struct platform_device iop13xx_tpmi_0_device = {
        .resource = iop13xx_tpmi_0_resources,
        .dev = {
                .dma_mask          = &iop13xx_tpmi_mask,
-               .coherent_dma_mask = DMA_BIT_MASK(64),
+               .coherent_dma_mask = DMA_BIT_MASK(32),
        },
 };
 
@@ -171,7 +171,7 @@ static struct platform_device iop13xx_tpmi_1_device = {
        .resource = iop13xx_tpmi_1_resources,
        .dev = {
                .dma_mask          = &iop13xx_tpmi_mask,
-               .coherent_dma_mask = DMA_BIT_MASK(64),
+               .coherent_dma_mask = DMA_BIT_MASK(32),
        },
 };
 
@@ -182,7 +182,7 @@ static struct platform_device iop13xx_tpmi_2_device = {
        .resource = iop13xx_tpmi_2_resources,
        .dev = {
                .dma_mask          = &iop13xx_tpmi_mask,
-               .coherent_dma_mask = DMA_BIT_MASK(64),
+               .coherent_dma_mask = DMA_BIT_MASK(32),
        },
 };
 
@@ -193,7 +193,7 @@ static struct platform_device iop13xx_tpmi_3_device = {
        .resource = iop13xx_tpmi_3_resources,
        .dev = {
                .dma_mask          = &iop13xx_tpmi_mask,
-               .coherent_dma_mask = DMA_BIT_MASK(64),
+               .coherent_dma_mask = DMA_BIT_MASK(32),
        },
 };
 

diff --git a/arch/arm/plat-iop/adma.c b/arch/arm/plat-iop/adma.c
index a4d1f8de3b5b23453ee4738723164a5ba8405424..d9612221e4848971f4ea27cf4f5d4c319073e439 100644 (file)
--- a/arch/arm/plat-iop/adma.c
+++ b/arch/arm/plat-iop/adma.c
@@ -143,7 +143,7 @@ struct platform_device iop3xx_dma_0_channel = {
        .resource = iop3xx_dma_0_resources,
        .dev = {
                .dma_mask = &iop3xx_adma_dmamask,
-               .coherent_dma_mask = DMA_BIT_MASK(64),
+               .coherent_dma_mask = DMA_BIT_MASK(32),
                .platform_data = (void *) &iop3xx_dma_0_data,
        },
 };
@@ -155,7 +155,7 @@ struct platform_device iop3xx_dma_1_channel = {
        .resource = iop3xx_dma_1_resources,
        .dev = {
                .dma_mask = &iop3xx_adma_dmamask,
-               .coherent_dma_mask = DMA_BIT_MASK(64),
+               .coherent_dma_mask = DMA_BIT_MASK(32),
                .platform_data = (void *) &iop3xx_dma_1_data,
        },
 };
@@ -167,7 +167,7 @@ struct platform_device iop3xx_aau_channel = {
        .resource = iop3xx_aau_resources,
        .dev = {
                .dma_mask = &iop3xx_adma_dmamask,
-               .coherent_dma_mask = DMA_BIT_MASK(64),
+               .coherent_dma_mask = DMA_BIT_MASK(32),
                .platform_data = (void *) &iop3xx_aau_data,
        },
 };