On 28.02.14, 22:51, Josh Cartwright wrote:
[..]
>> + sg_init_one(&sg, data_buf, sizeof(data_buf));
>> + memset(data_buf, 0, sizeof(data_buf));
>> + mmc_wait_for_req(mmc, &mrq);
>> +
>> + if (!cmd.error && !data.error &&
>> + !memcmp(data_buf, tuning_block_pattern, sizeof(data_buf))) {
>
> This memcmp is broken, sizeof(data_buf) is likely not what you want,
> maybe you want 'size'? Same thing for sg_init_one()/memset() above.
>
> From sparse:
>
> drivers/mmc/host/sdhci-msm.c: In function ‘sdhci_msm_execute_tuning’:
> drivers/mmc/host/sdhci-msm.c:461:53: warning: argument to ‘sizeof’ in ‘memcmp’ call is the same expression as the first source; did you mean to provide an explicit length? [-Wsizeof-pointer-memaccess]
> !memcmp(data_buf, tuning_block_pattern, sizeof(data_buf))) {
>
Nice catch, Josh! Thanks for reviewing!
BR,
Georgi
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