MMC: OMAP: Fix timeout calculation for MMC multislot support

[linux-2.6-omap-h63xx.git] / drivers / mmc / host / omap.c

diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 90e9d68e79987c5466f2a3dfa798249085aa05d3..0d3cd3c23f8fffb8c3923ced7230e142e4f7c00c 100644 (file)
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -861,13 +861,12 @@ static inline void set_cmd_timeout(struct mmc_omap_host *host, struct mmc_reques
 
 static inline void set_data_timeout(struct mmc_omap_host *host, struct mmc_request *req)
 {
-       int timeout;
+       unsigned int timeout, cycle_ns;
        u16 reg;
 
-       /* Convert ns to clock cycles by assuming 20MHz frequency
-        * 1 cycle at 20MHz = 500 ns
-        */
-       timeout = req->data->timeout_clks + req->data->timeout_ns / 500;
+       cycle_ns = 1000000000 / host->current_slot->fclk_freq;
+       timeout = req->data->timeout_ns / cycle_ns;
+       timeout += req->data->timeout_clks;
 
        /* Check if we need to use timeout multiplier register */
        reg = OMAP_MMC_READ(host, SDIO);