mmc: dw_mmc: Remove set-but-unused variable.

count is only ever used by assigning to old_len if count == 0, and
then old_len isn't ever used at all.  So, both are redundant.  Fixes:

drivers/mmc/host/dw_mmc.c: In function ‘dw_mci_read_data_pio’:
drivers/mmc/host/dw_mmc.c:1034:32: warning: variable ‘old_len’ set but
not used [-Wunused-but-set-variable]

Signed-off-by: Chris Ball <cjb@laptop.org>
Acked-by: Will Newton <will.newton@imgtec.com>

1 files changed, 1 insertions, 5 deletions

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 58476c1bb056..299c1d61b6b3 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1031,13 +1031,10 @@ static void dw_mci_read_data_pio(struct dw_mci *host)
         struct mmc_data *data = host->data;
         int shift = host->data_shift;
         u32 status;
-        unsigned int nbytes = 0, len, old_len, count = 0;
+        unsigned int nbytes = 0, len;
 
         do {
                 len = SDMMC_GET_FCNT(mci_readl(host, STATUS)) << shift;
-                if (count == 0)
-                        old_len = len;
-
                 if (offset + len <= sg->length) {
                         host->pull_data(host, (void *)(buf + offset), len);
 
@@ -1082,7 +1079,6 @@ static void dw_mci_read_data_pio(struct dw_mci *host)
                         tasklet_schedule(&host->tasklet);
                         return;
                 }
-                count++;
         } while (status & SDMMC_INT_RXDR); /*if the RXDR is ready read again*/
         len = SDMMC_GET_FCNT(mci_readl(host, STATUS));
         host->pio_offset = offset;