Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  MMC: Do not set unsupported bits in OCR response
  MMC: Poll card status after rescanning cards

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index ee8863c123e37881e0f35ee658a15fd5e925ad31..766bc54406e5864111ded440d722eb694bd03d3d 100644 (file)
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -475,7 +475,7 @@ static u32 mmc_select_voltage(struct mmc_host *host, u32 ocr)
        if (bit) {
                bit -= 1;
 
-               ocr = 3 << bit;
+               ocr &= 3 << bit;
 
                host->ios.vdd = bit;
                mmc_set_ios(host);
@@ -1178,14 +1178,29 @@ static void mmc_rescan(void *data)
 {
        struct mmc_host *host = data;
        struct list_head *l, *n;
+       unsigned char power_mode;
 
        mmc_claim_host(host);
 
-       if (host->ios.power_mode == MMC_POWER_ON)
+       /*
+        * Check for removed cards and newly inserted ones. We check for
+        * removed cards first so we can intelligently re-select the VDD.
+        */
+       power_mode = host->ios.power_mode;
+       if (power_mode == MMC_POWER_ON)
                mmc_check_cards(host);
 
        mmc_setup(host);
 
+       /*
+        * Some broken cards process CMD1 even in stand-by state. There is
+        * no reply, but an ILLEGAL_COMMAND error is cached and returned
+        * after next command. We poll for card status here to clear any
+        * possibly pending error.
+        */
+       if (power_mode == MMC_POWER_ON)
+               mmc_check_cards(host);
+
        if (!list_empty(&host->cards)) {
                /*
                 * (Re-)calculate the fastest clock rate which the