Re: [PATCH v2] staging: fbtft: fix out of bound access

[Joe Perches]

On Thu, 2015-06-04 at 19:04 +0530, Sudip Mukherjee wrote:
> str was 16 bytes but was mentioned as 128 in snprintf.
> again msg is 128 bytes but not sufficient to hold the complete debug
> message of register values.
> Now removed the use of str, msg and print the register values from the
> loop.
[]
> v2: removed the use of msg and str.

It's nice to cc the people that give you suggestions when
you send a new version of a patch.

> diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
[]
> @@ -1067,8 +1067,6 @@ static int fbtft_init_display_dt(struct fbtft_par *par)
>  	const __be32 *p;
>  	u32 val;
>  	int buf[64], i, j;
[]
>  			par->fbtftops.write_register(par, i,
>  				buf[0], buf[1], buf[2], buf[3],

It seems there are only 2 callers of (*write_register)()
and the arguments are always an in-order array int[64]

Maybe it'd be nicer to change the prototypes of the
write_register functions to take a const int * 
instead of pushing 64 ints on the stack.

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