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tifm_sd: treat "status error" as normal command completion

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TI FlasMedia controller attempts to validate command responses and
issues a "status error" if response does not matches its perceived
(by controller) value. As mmc layer does its own validation we can
safely ignore the controller's opinion.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Alex Dubov 2007-02-10 21:16:40 -08:00 committed by Pierre Ossman
parent abc71668b5
commit 12c834527b
1 changed files with 4 additions and 7 deletions
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11
drivers/mmc/tifm_sd.c
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@ -36,8 +36,8 @@ module_param(fixed_timeout, bool, 0644);
#define TIFM_MMCSD_INAB 0x0080 /* abort / initialize command */ #define TIFM_MMCSD_INAB 0x0080 /* abort / initialize command */
#define TIFM_MMCSD_READ 0x8000 #define TIFM_MMCSD_READ 0x8000
#define TIFM_MMCSD_DATAMASK 0x001d /* set bits: EOFB, BRS, CB, EOC */ #define TIFM_MMCSD_DATAMASK 0x401d /* set bits: CERR, EOFB, BRS, CB, EOC */
#define TIFM_MMCSD_ERRMASK 0x41e0 /* set bits: CERR, CCRC, CTO, DCRC, DTO */ #define TIFM_MMCSD_ERRMASK 0x01e0 /* set bits: CCRC, CTO, DCRC, DTO */
#define TIFM_MMCSD_EOC 0x0001 /* end of command phase */ #define TIFM_MMCSD_EOC 0x0001 /* end of command phase */
#define TIFM_MMCSD_CB 0x0004 /* card enter busy state */ #define TIFM_MMCSD_CB 0x0004 /* card enter busy state */
#define TIFM_MMCSD_BRS 0x0008 /* block received/sent */ #define TIFM_MMCSD_BRS 0x0008 /* block received/sent */
@ -242,7 +242,7 @@ change_state:
case IDLE: case IDLE:
return; return;
case CMD: case CMD:
if (host_status & TIFM_MMCSD_EOC) { if (host_status & (TIFM_MMCSD_EOC | TIFM_MMCSD_CERR)) {
tifm_sd_fetch_resp(cmd, sock); tifm_sd_fetch_resp(cmd, sock);
if (cmd->data) { if (cmd->data) {
host->state = BRS; host->state = BRS;
@ -341,10 +341,7 @@ static void tifm_sd_signal_irq(struct tifm_dev *sock,
goto done; goto done;
if (host_status & TIFM_MMCSD_ERRMASK) { if (host_status & TIFM_MMCSD_ERRMASK) {
if (host_status & TIFM_MMCSD_CERR) if (host_status & (TIFM_MMCSD_CTO | TIFM_MMCSD_DTO))
error_code = MMC_ERR_FAILED;
else if (host_status
& (TIFM_MMCSD_CTO | TIFM_MMCSD_DTO))
error_code = MMC_ERR_TIMEOUT; error_code = MMC_ERR_TIMEOUT;
else if (host_status else if (host_status
& (TIFM_MMCSD_CCRC | TIFM_MMCSD_DCRC)) & (TIFM_MMCSD_CCRC | TIFM_MMCSD_DCRC))