From: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org
The driver's probe() first registers regulators in a loop and then in a second loop passes them as irq data to the interrupt handlers. However the function to get the regulator for given name tps65219_get_rdev_by_name() was a no-op due to argument passed by value, not pointer, thus the second loop assigned always same value - from previous loop. The interrupts, when fired, where executed with wrong data. Compiler also noticed it:
drivers/regulator/tps65219-regulator.c: In function ‘tps65219_get_rdev_by_name’: drivers/regulator/tps65219-regulator.c:292:60: error: parameter ‘dev’ set but not used [-Werror=unused-but-set-parameter]
Fixes: c12ac5fc3e0a ("regulator: drivers: Add TI TPS65219 PMIC regulators support") Cc: stable@vger.kernel.org Signed-off-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org Reviewed-by: Markus Schneider-Pargmann msp@baylibre.com Signed-off-by: Jerome Neanne jneanne@baylibre.com ---
Notes: This is backport of upstream fix in TI mainline: Link: https://lore.kernel.org/all/20230507144656.192800-1-krzysztof.kozlowski@lina...
drivers/regulator/tps65219-regulator.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/regulator/tps65219-regulator.c b/drivers/regulator/tps65219-regulator.c index 58f6541b6417..b0d8d6fed24d 100644 --- a/drivers/regulator/tps65219-regulator.c +++ b/drivers/regulator/tps65219-regulator.c @@ -289,13 +289,13 @@ static irqreturn_t tps65219_regulator_irq_handler(int irq, void *data)
static int tps65219_get_rdev_by_name(const char *regulator_name, struct regulator_dev *rdevtbl[7], - struct regulator_dev *dev) + struct regulator_dev **dev) { int i;
for (i = 0; i < ARRAY_SIZE(regulators); i++) { if (strcmp(regulator_name, regulators[i].name) == 0) { - dev = rdevtbl[i]; + *dev = rdevtbl[i]; return 0; } } @@ -348,7 +348,7 @@ static int tps65219_regulator_probe(struct platform_device *pdev) irq_data[i].dev = tps->dev; irq_data[i].type = irq_type;
- tps65219_get_rdev_by_name(irq_type->regulator_name, rdevtbl, rdev); + tps65219_get_rdev_by_name(irq_type->regulator_name, rdevtbl, &rdev); if (IS_ERR(rdev)) { dev_err(tps->dev, "Failed to get rdev for %s\n", irq_type->regulator_name);