diff options
| author | Venkat Gopalakrishnan <venkatg@codeaurora.org> | 2014-04-09 10:54:29 -0700 |
|---|---|---|
| committer | Subhash Jadavani <subhashj@codeaurora.org> | 2016-05-27 10:29:06 -0700 |
| commit | 81dd76ac077bdbc120ddb05ea9a27bc2ae8d7796 (patch) | |
| tree | a35fd19ffd48cd838865a73a9a9fe859703d9e72 | |
| parent | 93a9fa1e474c2eae42a181590f12e9e20a3a7e90 (diff) | |
mmc: sdhci: Poll for register status much tightly
On fast path, waiting for 1ms interval to poll registers cause
performance degradation. Also having 1ms delays for polling with
interrupts disabled cause considerable system latencies, hence
poll at 1us interval.
Change-Id: I40113ccf56050b3c46604112846e9b37b254d2be
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 560264335f1b..379135a14f38 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -244,7 +244,7 @@ void sdhci_reset(struct sdhci_host *host, u8 mask) } /* Wait max 100 ms */ - timeout = 100; + timeout = 100000; if (host->ops->check_power_status && host->pwr && (mask & SDHCI_RESET_ALL)) @@ -1096,7 +1096,7 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) WARN_ON(host->cmd); /* Wait max 10 ms */ - timeout = 10; + timeout = 10000; mask = SDHCI_CMD_INHIBIT; if ((cmd->data != NULL) || (cmd->flags & MMC_RSP_BUSY)) @@ -1117,7 +1117,7 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) return; } timeout--; - mdelay(1); + udelay(1); } timeout = jiffies; @@ -1349,7 +1349,7 @@ clock_set: sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); /* Wait max 20 ms */ - timeout = 20; + timeout = 20000; while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL)) & SDHCI_CLOCK_INT_STABLE)) { if (timeout == 0) { @@ -1359,7 +1359,7 @@ clock_set: return; } timeout--; - mdelay(1); + udelay(1); } clk |= SDHCI_CLOCK_CARD_EN; |