From 90e07d9f54c61449dd48eff82e2354d0124d4f7e Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Sun, 13 May 2007 18:03:08 +0200 Subject: [PATCH] pxamci: fix PXA27x MMC workaround for bad CRC with 136 bit response ... and make it depend on the response flag instead of the command type. Signed-off-by: Nicolas Pitre Signed-off-by: Pierre Ossman --- drivers/mmc/host/pxamci.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c index d97d3864b57f..f8985c508bb9 100644 --- a/drivers/mmc/host/pxamci.c +++ b/drivers/mmc/host/pxamci.c @@ -232,20 +232,14 @@ static int pxamci_cmd_done(struct pxamci_host *host, unsigned int stat) /* * workaround for erratum #42: * Intel PXA27x Family Processor Specification Update Rev 001 + * A bogus CRC error can appear if the msb of a 136 bit + * response is a one. */ - if (cmd->opcode == MMC_ALL_SEND_CID || - cmd->opcode == MMC_SEND_CSD || - cmd->opcode == MMC_SEND_CID) { - /* a bogus CRC error can appear if the msb of - the 15 byte response is a one */ - if ((cmd->resp[0] & 0x80000000) == 0) - cmd->error = MMC_ERR_BADCRC; - } else { - pr_debug("ignoring CRC from command %d - *risky*\n",cmd->opcode); - } -#else - cmd->error = MMC_ERR_BADCRC; + if (cmd->flags & MMC_RSP_136 && cmd->resp[0] & 0x80000000) { + pr_debug("ignoring CRC from command %d - *risky*\n", cmd->opcode); + } else #endif + cmd->error = MMC_ERR_BADCRC; } pxamci_disable_irq(host, END_CMD_RES); -- 2.30.2