regulator: ab8500: Remove AB8505 USB regulator

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: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/regulator/ab8500.c b/drivers/regulator/ab8500.c
index c625468c7f2c9b2894b83f3fe24b7a22b0ed5069..267d2a19fa9970c735cd70636873ebe42b57bc93 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 75307447cef966eb3d168de7542c84181c849d63..6b8da0177d307c8253324e59454ff4b8d265e7d2 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,