[U-Boot] [PATCH 1/1] mmc: bcm2835_sdhci: Use calloc to allocate bcm2835_sdhci_host

Pantelis Antoniou panto at antoniou-consulting.com
Tue May 5 11:38:38 CEST 2015


Hi Alexander,

> On Apr 17, 2015, at 18:33 , Alexander Stein <alexanders83 at web.de> wrote:
> 
> We need to clear the allocated memory explicitly as the included
> struct sdhci_host has function pointers. Those are compared to NULL to
> test if this (optional) feature is supported. Leaving them undefined let
> u-boot jump to arbitrary memory.
> 
> Signed-off-by: Alexander Stein <alexanders83 at web.de>
> ---
> drivers/mmc/bcm2835_sdhci.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mmc/bcm2835_sdhci.c b/drivers/mmc/bcm2835_sdhci.c
> index 92f7d89..127dbe3 100644
> --- a/drivers/mmc/bcm2835_sdhci.c
> +++ b/drivers/mmc/bcm2835_sdhci.c
> @@ -154,9 +154,9 @@ int bcm2835_sdhci_init(u32 regbase, u32 emmc_freq)
> 	struct bcm2835_sdhci_host *bcm_host;
> 	struct sdhci_host *host;
> 
> -	bcm_host = malloc(sizeof(*bcm_host));
> +	bcm_host = calloc(1, sizeof(*bcm_host));
> 	if (!bcm_host) {
> -		printf("sdhci_host malloc fail!\n");
> +		printf("sdhci_host calloc fail!\n");
> 		return 1;
> 	}
> 
> -- 
> 2.3.5
> 

Applied, Thanks.

— Pantelis



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