regulator: ab8500: Remove AB8505 USB regulator

BugLink: https://bugs.launchpad.net/bugs/1860602
commit 99c4f70df3a6446c56ca817c2d0f9c12d85d4e7c upstream.

The USB regulator was removed for AB8500 in
commit 41a06aa738ad ("regulator: ab8500: Remove USB regulator").
It was then added for AB8505 in
commit 547f384f33db ("regulator: ab8500: add support for ab8505").

However, there was never an entry added for it in
ab8505_regulator_match. This causes all regulators after it
to be initialized with the wrong device tree data, eventually
leading to an out-of-bounds array read.

Given that it is not used anywhere in the kernel, it seems
likely that similar arguments against supporting it exist for
AB8505 (it is controlled by hardware).

Therefore, simply remove it like for AB8500 instead of adding
an entry in ab8505_regulator_match.

Fixes: 547f384f33db ("regulator: ab8500: add support for ab8505")
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20191106173125.14496-1-stephan@gerhold.net
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index 0f97514e347430b53277f1a42f7ddf1fe7b8e71b..c9f20e1394e3b233306f5902f5d1d823fecaac2b 100644 (file)
--- a/drivers/regulator/ab8500.c
+++ b/drivers/regulator/ab8500.c
@@ -1099,23 +1099,6 @@ static struct ab8500_regulator_info
                .update_val_idle        = 0x82,
                .update_val_normal      = 0x02,
        },
-       [AB8505_LDO_USB] = {
-               .desc = {
-                       .name           = "LDO-USB",
-                       .ops            = &ab8500_regulator_mode_ops,
-                       .type           = REGULATOR_VOLTAGE,
-                       .id             = AB8505_LDO_USB,
-                       .owner          = THIS_MODULE,
-                       .n_voltages     = 1,
-                       .volt_table     = fixed_3300000_voltage,
-               },
-               .update_bank            = 0x03,
-               .update_reg             = 0x82,
-               .update_mask            = 0x03,
-               .update_val             = 0x01,
-               .update_val_idle        = 0x03,
-               .update_val_normal      = 0x01,
-       },
        [AB8505_LDO_AUDIO] = {
                .desc = {
                        .name           = "LDO-AUDIO",

diff --git a/include/linux/regulator/ab8500.h b/include/linux/regulator/ab8500.h
index d8ecefaf63ca0ed956d82afbffedc2debe569311..260c4aa1d9761aed1e52f92537ce984ecd1d0740 100644 (file)
--- a/include/linux/regulator/ab8500.h
+++ b/include/linux/regulator/ab8500.h
@@ -38,7 +38,6 @@ enum ab8505_regulator_id {
        AB8505_LDO_AUX6,
        AB8505_LDO_INTCORE,
        AB8505_LDO_ADC,
-       AB8505_LDO_USB,
        AB8505_LDO_AUDIO,
        AB8505_LDO_ANAMIC1,
        AB8505_LDO_ANAMIC2,