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SubjectRe: [PATCH] staging:rts_pstor:Fix SDIO issue
Dear Carpenter:

I will resend the patch

Best Regards,
wwang


于 2011年10月09日 21:57, Dan Carpenter 写道:
> What I'm saying is, it's confusing to add another variable which is
> only subtly different from retval. Here is what it looks like after
> we apply the patch.
>
> int reset_pass = 0;
>
> /* skip 45 lines */
>
> retval = sd_change_bank_voltage(chip, SD_IO_3V3);
> if (retval != STATUS_SUCCESS) {
> TRACE_RET(chip, STATUS_FAIL);
> }
>
> /* skip 30 lines */
>
> if (!reset_pass)
> TRACE_RET(chip, STATUS_FAIL);
>
> The reviewer would have to read through 80 lines of code to find that
> we don't care about the return value from sd_change_bank_voltage().
> Don't do it that way.
>
> Here is how I would write what it. I can't actually test this since
> I don't have the hardware...
>
> diff --git a/drivers/staging/rts_pstor/sd.c b/drivers/staging/rts_pstor/sd.c
> index fb62eaf..46bf0e1 100644
> --- a/drivers/staging/rts_pstor/sd.c
> +++ b/drivers/staging/rts_pstor/sd.c
> @@ -3134,39 +3134,36 @@ int reset_sd_card(struct rtsx_chip *chip)
>
> if (chip->sd_ctl & RESET_MMC_FIRST) {
> retval = reset_mmc(chip);
> - if ((retval != STATUS_SUCCESS) && !sd_check_err_code(chip, SD_NO_CARD)) {
> + if (retval != STATUS_SUCCESS) {
> + if (sd_check_err_code(chip, SD_NO_CARD))
> + TRACE_RET(chip, STATUS_FAIL);
> +
> retval = reset_sd(chip);
> if (retval != STATUS_SUCCESS) {
> - if (CHECK_PID(chip, 0x5209)) {
> - retval = sd_change_bank_voltage(chip, SD_IO_3V3);
> - if (retval != STATUS_SUCCESS) {
> - TRACE_RET(chip, STATUS_FAIL);
> - }
> - }
> + if (CHECK_PID(chip, 0x5209))
> + sd_change_bank_voltage(chip, SD_IO_3V3);
> + TRACE_RET(chip, STATUS_FAIL);
> }
> }
> } else {
> retval = reset_sd(chip);
> if (retval != STATUS_SUCCESS) {
> - if (sd_check_err_code(chip, SD_NO_CARD)) {
> + if (sd_check_err_code(chip, SD_NO_CARD))
> TRACE_RET(chip, STATUS_FAIL);
> - }
>
> if (CHECK_PID(chip, 0x5209)) {
> retval = sd_change_bank_voltage(chip, SD_IO_3V3);
> - if (retval != STATUS_SUCCESS) {
> + if (retval != STATUS_SUCCESS)
> TRACE_RET(chip, STATUS_FAIL);
> - }
> }
>
> - if (!chip->sd_io) {
> - retval = reset_mmc(chip);
> - }
> - }
> - }
> + if (chip->sd_io)
> + TRACE_RET(chip, STATUS_FAIL);
>
> - if (retval != STATUS_SUCCESS) {
> - TRACE_RET(chip, STATUS_FAIL);
> + retval = reset_mmc(chip);
> + if (retval != STATUS_SUCCESS)
> + TRACE_RET(chip, STATUS_FAIL);
> + }
> }
>
> retval = sd_set_clock_divider(chip, SD_CLK_DIVIDE_0);

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