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authorBalaji T K <balajitk@ti.com>2014-01-21 19:54:42 +0530
committerChris Ball <chris@printf.net>2014-03-04 11:45:07 -0500
commit6e3076c27da0ac653dda6503dadd2852c2d0eac1 (patch)
tree6071b6093d697ba7888edec1d2acfac923265a64 /drivers/mmc
parent4ea42235b5a999eff57f38696ae532a6b9377c55 (diff)
mmc: omap_hsmmc: save clock rate to use in interrupt context
clk_get_rate throws DEBUG_LOCKS_WARN_ON(in_interrupt()) warning if called from interrupt context. use cached clock rate in set_data_timeout, so that set_data_timeout can be called from interrupt context. Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <chris@printf.net>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/omap_hsmmc.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index d9c84ea46b63..6cb4e19dcf07 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -192,6 +192,7 @@ struct omap_hsmmc_host {
int reqs_blocked;
int use_reg;
int req_in_progress;
+ unsigned long clk_rate;
struct omap_hsmmc_next next_data;
struct omap_mmc_platform_data *pdata;
};
@@ -1360,7 +1361,7 @@ static void set_data_timeout(struct omap_hsmmc_host *host,
if (clkd == 0)
clkd = 1;
- cycle_ns = 1000000000 / (clk_get_rate(host->fclk) / clkd);
+ cycle_ns = 1000000000 / (host->clk_rate / clkd);
timeout = timeout_ns / cycle_ns;
timeout += timeout_clks;
if (timeout) {
@@ -1484,6 +1485,7 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req)
host->reqs_blocked = 0;
WARN_ON(host->mrq != NULL);
host->mrq = req;
+ host->clk_rate = clk_get_rate(host->fclk);
err = omap_hsmmc_prepare_data(host, req);
if (err) {
req->cmd->error = err;