Re: [PATCHv2 26/29] af9015: Don't use dynamic static allocation

[Antti Palosaari <crope@iki.fi>]

ACK. IIRC I did macro optimization here and that used way gives few 
bytes smaller footprint =)

Antti

On 02.11.2013 15:31, Mauro Carvalho Chehab wrote:
> Dynamic static allocation is evil, as Kernel stack is too low, and
> ompilation complains about it on some archs:
>
> 	drivers/media/usb/dvb-usb-v2/af9015.c:433:1: warning: 'af9015_eeprom_hash' uses dynamic stack allocation [enabled by default]
>
> In this specific case, it is a gcc bug, as the size is a const, but
> it is easy to just change it from const to a #define, getting rid of
> the gcc warning.
>
> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
> Cc: Antti Palosaari <crope@iki.fi>

Acked-by: Antti Palosaari <crope@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>

> ---
>   drivers/media/usb/dvb-usb-v2/af9015.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/usb/dvb-usb-v2/af9015.c b/drivers/media/usb/dvb-usb-v2/af9015.c
> index d556042cf312..da47d2392f2a 100644
> --- a/drivers/media/usb/dvb-usb-v2/af9015.c
> +++ b/drivers/media/usb/dvb-usb-v2/af9015.c
> @@ -397,12 +397,13 @@ error:
>   	return ret;
>   }
>
> +#define AF9015_EEPROM_SIZE 256
> +
>   /* hash (and dump) eeprom */
>   static int af9015_eeprom_hash(struct dvb_usb_device *d)
>   {
>   	struct af9015_state *state = d_to_priv(d);
>   	int ret, i;
> -	static const unsigned int AF9015_EEPROM_SIZE = 256;
>   	u8 buf[AF9015_EEPROM_SIZE];
>   	struct req_t req = {READ_I2C, AF9015_I2C_EEPROM, 0, 0, 1, 1, NULL};
>
>


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