diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2011-08-03 18:35:58 +0300 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-08-13 14:50:27 -0400 |
| commit | 83cbcd93a1be803ccda53e7acbdc9a937c8f6375 (patch) | |
| tree | dbe47bb08608058d3d3bc0c530793cbad02e6e41 | |
| parent | 4906baf080623b4971bdeeac0a9fec5b8885d3ac (diff) | |
| download | blackbird-op-linux-83cbcd93a1be803ccda53e7acbdc9a937c8f6375.tar.gz blackbird-op-linux-83cbcd93a1be803ccda53e7acbdc9a937c8f6375.zip | |
mmc: Revert "mmc: sdhci: Fix SDHCI_QUIRK_TIMEOUT_USES_SDCLK"
This reverts commit 4b01681c7764, which introduced a new potential
divide by zero in the process of fixing one. The subsequent commits
attempt to fix the issue properly.
Signed-off-by: Chris Ball <cjb@laptop.org>
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 262985a1a952..11d031b8708c 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -632,9 +632,6 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd) target_timeout = data->timeout_ns / 1000 + data->timeout_clks / host->clock; - if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK) - host->timeout_clk = host->clock / 1000; - /* * Figure out needed cycles. * We do this in steps in order to fit inside a 32 bit int. @@ -645,7 +642,6 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd) * => * (1) / (2) > 2^6 */ - BUG_ON(!host->timeout_clk); count = 0; current_timeout = (1 << 13) * 1000 / host->timeout_clk; while (current_timeout < target_timeout) { @@ -2474,6 +2470,9 @@ int sdhci_add_host(struct sdhci_host *host) if (caps[0] & SDHCI_TIMEOUT_CLK_UNIT) host->timeout_clk *= 1000; + if (host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK) + host->timeout_clk = host->clock / 1000; + /* * In case of Host Controller v3.00, find out whether clock * multiplier is supported. |
