mmc: block: Make card_busy_detect() accumulate all response error bits

Make card_busy_detect() accumulate all response error bits. Later patches
will make use of this.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 6d2c42c..30fc012 100644 (file)
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -923,7 +923,8 @@ static int mmc_sd_num_wr_blocks(struct mmc_card *card, u32 *written_blocks)
 }
 
 static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms,
-               bool hw_busy_detect, struct request *req, bool *gen_err)
+                           bool hw_busy_detect, struct request *req,
+                           u32 *resp_errs)
 {
        unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms);
        int err = 0;
@@ -937,11 +938,9 @@ static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms,
                        return err;
                }
 
-               if (status & R1_ERROR) {
-                       pr_err("%s: %s: error sending status cmd, status %#x\n",
-                               req->rq_disk->disk_name, __func__, status);
-                       *gen_err = true;
-               }
+               /* Accumulate any response error bits seen */
+               if (resp_errs)
+                       *resp_errs |= status;
 
                /* We may rely on the host hw to handle busy detection.*/
                if ((card->host->caps & MMC_CAP_WAIT_WHILE_BUSY) &&
@@ -970,6 +969,24 @@ static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms,
        return err;
 }
 
+static int card_busy_detect_err(struct mmc_card *card, unsigned int timeout_ms,
+                               bool hw_busy_detect, struct request *req,
+                               bool *gen_err)
+{
+       u32 resp_errs = 0;
+       int err;
+
+       err = card_busy_detect(card, timeout_ms, hw_busy_detect, req,
+                              &resp_errs);
+       if (resp_errs & R1_ERROR) {
+               pr_err("%s: %s: error sending status cmd, status %#x\n",
+                      req->rq_disk->disk_name, __func__, resp_errs);
+               *gen_err = true;
+       }
+
+       return err;
+}
+
 static int send_stop(struct mmc_card *card, unsigned int timeout_ms,
                struct request *req, bool *gen_err, u32 *stop_status)
 {
@@ -1012,7 +1029,8 @@ static int send_stop(struct mmc_card *card, unsigned int timeout_ms,
                *gen_err = true;
        }
 
-       return card_busy_detect(card, timeout_ms, use_r1b_resp, req, gen_err);
+       return card_busy_detect_err(card, timeout_ms, use_r1b_resp, req,
+                                   gen_err);
 }
 
 #define ERR_NOMEDIUM   3
@@ -1553,8 +1571,8 @@ static enum mmc_blk_status __mmc_blk_err_check(struct mmc_card *card,
                        gen_err = true;
                }
 
-               err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, false, req,
-                                       &gen_err);
+               err = card_busy_detect_err(card, MMC_BLK_TIMEOUT_MS, false, req,
+                                          &gen_err);
                if (err)
                        return MMC_BLK_CMD_ERR;
        }
@@ -2148,7 +2166,8 @@ static int mmc_blk_card_busy(struct mmc_card *card, struct request *req)
        if (mmc_host_is_spi(card->host) || rq_data_dir(req) == READ)
                return 0;
 
-       err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, false, req, &gen_err);
+       err = card_busy_detect_err(card, MMC_BLK_TIMEOUT_MS, false, req,
+                                  &gen_err);
 
        /* Copy the general error bit so it will be seen later on */
        if (gen_err) {