From: Alexey Khoroshilov Date: Fri, 14 Mar 2014 21:04:03 +0000 (-0300) Subject: [media] adv7180: free an interrupt on failure paths in init_device() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=df065b373f882c4efc396afa1f31cd8afedab356;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git [media] adv7180: free an interrupt on failure paths in init_device() There is request_irq() in init_device(), but the interrupt is not removed on failure paths. The patch adds proper error handling. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c index 9cfc9a3ab3cc..5e638b159452 100644 --- a/drivers/media/i2c/adv7180.c +++ b/drivers/media/i2c/adv7180.c @@ -561,40 +561,44 @@ static int init_device(struct i2c_client *client, struct adv7180_state *state) ret = i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG, ADV7180_ADI_CTRL_IRQ_SPACE); if (ret < 0) - return ret; + goto err; /* config the Interrupt pin to be active low */ ret = i2c_smbus_write_byte_data(client, ADV7180_ICONF1_ADI, ADV7180_ICONF1_ACTIVE_LOW | ADV7180_ICONF1_PSYNC_ONLY); if (ret < 0) - return ret; + goto err; ret = i2c_smbus_write_byte_data(client, ADV7180_IMR1_ADI, 0); if (ret < 0) - return ret; + goto err; ret = i2c_smbus_write_byte_data(client, ADV7180_IMR2_ADI, 0); if (ret < 0) - return ret; + goto err; /* enable AD change interrupts interrupts */ ret = i2c_smbus_write_byte_data(client, ADV7180_IMR3_ADI, ADV7180_IRQ3_AD_CHANGE); if (ret < 0) - return ret; + goto err; ret = i2c_smbus_write_byte_data(client, ADV7180_IMR4_ADI, 0); if (ret < 0) - return ret; + goto err; ret = i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG, 0); if (ret < 0) - return ret; + goto err; } return 0; + +err: + free_irq(state->irq, state); + return ret; } static int adv7180_probe(struct i2c_client *client,