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authorLinus Torvalds <torvalds@g5.osdl.org>2006-04-26 15:45:27 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-26 15:45:27 -0700
commita82642fa190029a438c0d09edb0e5463a0fe9e1e (patch)
tree92919f355dbf3f401a5ad96359dd6a741cd24f6a
parent58f8236bed448273cd7f9ae02c09467853303484 (diff)
parent3d63abe56be2147891b3438cb3bd37a9be72bda7 (diff)
Merge master.kernel.org:/home/rmk/linux-2.6-mmc
* master.kernel.org:/home/rmk/linux-2.6-mmc: [MMC] pxamci: fix data timeout calculation
-rw-r--r--drivers/mmc/pxamci.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/mmc/pxamci.c b/drivers/mmc/pxamci.c
index eb9a8826e9b5..eb42cb349420 100644
--- a/drivers/mmc/pxamci.c
+++ b/drivers/mmc/pxamci.c
@@ -65,11 +65,6 @@ struct pxamci_host {
unsigned int dma_dir;
};
-static inline unsigned int ns_to_clocks(unsigned int ns)
-{
- return (ns * (CLOCKRATE / 1000000) + 999) / 1000;
-}
-
static void pxamci_stop_clock(struct pxamci_host *host)
{
if (readl(host->base + MMC_STAT) & STAT_CLK_EN) {
@@ -113,6 +108,7 @@ static void pxamci_disable_irq(struct pxamci_host *host, unsigned int mask)
static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
{
unsigned int nob = data->blocks;
+ unsigned long long clks;
unsigned int timeout;
u32 dcmd;
int i;
@@ -125,7 +121,9 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
writel(nob, host->base + MMC_NOB);
writel(1 << data->blksz_bits, host->base + MMC_BLKLEN);
- timeout = ns_to_clocks(data->timeout_ns) + data->timeout_clks;
+ clks = (unsigned long long)data->timeout_ns * CLOCKRATE;
+ do_div(clks, 1000000000UL);
+ timeout = (unsigned int)clks + (data->timeout_clks << host->clkrt);
writel((timeout + 255) / 256, host->base + MMC_RDTO);
if (data->flags & MMC_DATA_READ) {