From 7f3c2e1d1df46a06c37c46b2c8ba66b405434e35 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sat, 6 Jun 2015 05:02:32 -0300 Subject: [PATCH] [media] cx231xx: fix compiler warning Fix this compiler warning by allocating a structure to read the eeprom instead of doing it on the stack and worse: the eeprom array is static, so that can cause problems if there are multiple cx231xx instances. cx231xx-cards.c: In function 'cx231xx_card_setup': cx231xx-cards.c:1110:1: warning: the frame size of 2064 bytes is larger than 2048 bytes [-Wframe-larger-than=] } ^ I did consider removing the code altogether since the result is actually not used at the moment, but I decided against it since it is used in other drivers and someone might want to start using it in this driver as well. And then it is useful that the code is already there. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/cx231xx/cx231xx-cards.c | 28 ++++++++++++++++++---------- 1 file changed, 18 insertions(+), 10 deletions(-) diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c index fe00da105e77..a4aa2851339a 100644 --- a/drivers/media/usb/cx231xx/cx231xx-cards.c +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c @@ -1092,17 +1092,25 @@ void cx231xx_card_setup(struct cx231xx *dev) case CX231XX_BOARD_HAUPPAUGE_930C_HD_1114xx: case CX231XX_BOARD_HAUPPAUGE_955Q: { - struct tveeprom tvee; - static u8 eeprom[256]; - struct i2c_client client; - - memset(&client, 0, sizeof(client)); - client.adapter = cx231xx_get_i2c_adap(dev, I2C_1_MUX_1); - client.addr = 0xa0 >> 1; + struct eeprom { + struct tveeprom tvee; + u8 eeprom[256]; + struct i2c_client client; + }; + struct eeprom *e = kzalloc(sizeof(*e), GFP_KERNEL); + + if (e == NULL) { + dev_err(dev->dev, + "failed to allocate memory to read eeprom\n"); + break; + } + e->client.adapter = cx231xx_get_i2c_adap(dev, I2C_1_MUX_1); + e->client.addr = 0xa0 >> 1; - read_eeprom(dev, &client, eeprom, sizeof(eeprom)); - tveeprom_hauppauge_analog(&client, - &tvee, eeprom + 0xc0); + read_eeprom(dev, &e->client, e->eeprom, sizeof(e->eeprom)); + tveeprom_hauppauge_analog(&e->client, + &e->tvee, e->eeprom + 0xc0); + kfree(e); break; } } -- 2.11.0