From: Barry Song <baohua.s...@csr.com>
now we wait 1ms after every loop, in the worst case, 1ms will be wasted.
that both decreases sd performance and increases cpu usage.
This patch shorten the interval to 1us, then in the worst case, only 1us
is wasted.
Signed-off-by: Barry Song <baohua.s...@csr.com>
---
drivers/mmc/host/sdhci.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 0e02cc1..13bcb96 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -935,8 +935,8 @@ static void sdhci_send_command(struct sdhci_host *host,
struct mmc_command *cmd)
WARN_ON(host->cmd);
- /* Wait max 10 ms */
- timeout = 10;
+ /* Wait max 10000 us */
+ timeout = 10000;
mask = SDHCI_CMD_INHIBIT;
if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY))
@@ -957,7 +957,7 @@ static void sdhci_send_command(struct sdhci_host *host,
struct mmc_command *cmd)
return;
}
timeout--;
- mdelay(1);
+ udelay(1);
}
mod_timer(&host->timer, jiffies + 10 * HZ);
--
1.7.1
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