diff options
| author | Balaji T K <balajitk@ti.com> | 2014-01-21 19:54:42 +0530 |
|---|---|---|
| committer | Chris Ball <chris@printf.net> | 2014-03-04 11:45:07 -0500 |
| commit | 6e3076c27da0ac653dda6503dadd2852c2d0eac1 (patch) | |
| tree | 6071b6093d697ba7888edec1d2acfac923265a64 /drivers/mmc | |
| parent | 4ea42235b5a999eff57f38696ae532a6b9377c55 (diff) | |
| download | linux-6e3076c27da0ac653dda6503dadd2852c2d0eac1.tar.bz2 | |
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.c | 4 |
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; |