diff options
Diffstat (limited to 'recipes/linux/linux-2.6.28/collie/0022-mmc_block-print-better-error-messages.patch')
| -rw-r--r-- | recipes/linux/linux-2.6.28/collie/0022-mmc_block-print-better-error-messages.patch | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.28/collie/0022-mmc_block-print-better-error-messages.patch b/recipes/linux/linux-2.6.28/collie/0022-mmc_block-print-better-error-messages.patch new file mode 100644 index 0000000000..b6cef07c19 --- /dev/null +++ b/recipes/linux/linux-2.6.28/collie/0022-mmc_block-print-better-error-messages.patch @@ -0,0 +1,93 @@ +From d71af40a7a15a2ee7040fa0d5c8ac1bc19873c7d Mon Sep 17 00:00:00 2001 +From: Adrian Hunter <ext-adrian.hunter@nokia.com> +Date: Thu, 16 Oct 2008 12:55:25 +0300 +Subject: [PATCH 22/23] mmc_block: print better error messages + +Add command response and card status to error +messages. + +Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com> +Signed-off-by: Pierre Ossman <drzeus@drzeus.cx> +--- + drivers/mmc/card/block.c | 44 +++++++++++++++++++++++++++++++++++++------- + 1 files changed, 37 insertions(+), 7 deletions(-) + +diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c +index 903c8aa..cc9b3ab 100644 +--- a/drivers/mmc/card/block.c ++++ b/drivers/mmc/card/block.c +@@ -207,6 +207,23 @@ static u32 mmc_sd_num_wr_blocks(struct mmc_card *card) + return ntohl(blocks); + } + ++static u32 get_card_status(struct mmc_card *card, struct request *req) ++{ ++ struct mmc_command cmd; ++ int err; ++ ++ memset(&cmd, 0, sizeof(struct mmc_command)); ++ cmd.opcode = MMC_SEND_STATUS; ++ if (!mmc_host_is_spi(card->host)) ++ cmd.arg = card->rca << 16; ++ cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC; ++ err = mmc_wait_for_cmd(card->host, &cmd, 0); ++ if (err) ++ printk(KERN_ERR "%s: error %d sending status comand", ++ req->rq_disk->disk_name, err); ++ return cmd.resp[0]; ++} ++ + static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) + { + struct mmc_blk_data *md = mq->data; +@@ -218,7 +235,7 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) + + do { + struct mmc_command cmd; +- u32 readcmd, writecmd; ++ u32 readcmd, writecmd, status = 0; + + memset(&brq, 0, sizeof(struct mmc_blk_request)); + brq.mrq.cmd = &brq.cmd; +@@ -273,19 +290,32 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) + * until later as we need to wait for the card to leave + * programming mode even when things go wrong. + */ ++ if (brq.cmd.error || brq.data.error || brq.stop.error) ++ status = get_card_status(card, req); ++ + if (brq.cmd.error) { +- printk(KERN_ERR "%s: error %d sending read/write command\n", +- req->rq_disk->disk_name, brq.cmd.error); ++ printk(KERN_ERR "%s: error %d sending read/write " ++ "command, response %#x, card status %#x\n", ++ req->rq_disk->disk_name, brq.cmd.error, ++ brq.cmd.resp[0], status); + } + + if (brq.data.error) { +- printk(KERN_ERR "%s: error %d transferring data\n", +- req->rq_disk->disk_name, brq.data.error); ++ if (brq.data.error == -ETIMEDOUT && brq.mrq.stop) ++ /* 'Stop' response contains card status */ ++ status = brq.mrq.stop->resp[0]; ++ printk(KERN_ERR "%s: error %d transferring data," ++ " sector %u, nr %u, card status %#x\n", ++ req->rq_disk->disk_name, brq.data.error, ++ (unsigned)req->sector, ++ (unsigned)req->nr_sectors, status); + } + + if (brq.stop.error) { +- printk(KERN_ERR "%s: error %d sending stop command\n", +- req->rq_disk->disk_name, brq.stop.error); ++ printk(KERN_ERR "%s: error %d sending stop command, " ++ "response %#x, card status %#x\n", ++ req->rq_disk->disk_name, brq.stop.error, ++ brq.stop.resp[0], status); + } + + if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) { +-- +1.5.6.5 + |