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authorJohan Rudholm <johan.rudholm@axis.com>2015-01-12 09:38:04 -0500
committerUlf Hansson <ulf.hansson@linaro.org>2015-01-19 03:56:27 -0500
commit83533ab28380f6957af39a7b322e639e42dbdaf1 (patch)
tree2b7a8f3e11e0beef743e13fbf2862605b279d611 /drivers/mmc/core
parent25185f3f31c924eecc6ff4f55f7acceabf24de11 (diff)
mmc: core: always check status after reset
Always check if the card is alive after a successful reset. This allows us to remove mmc_hw_reset_check(), leaving mmc_hw_reset() as the only card reset interface. Signed-off-by: Johan Rudholm <johanru@axis.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/core')
-rw-r--r--drivers/mmc/core/core.c24
1 files changed, 5 insertions, 19 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index d3bfbdfab052..72070f188cc5 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2286,9 +2286,10 @@ int mmc_can_reset(struct mmc_card *card)
2286} 2286}
2287EXPORT_SYMBOL(mmc_can_reset); 2287EXPORT_SYMBOL(mmc_can_reset);
2288 2288
2289static int mmc_do_hw_reset(struct mmc_host *host, int check) 2289int mmc_hw_reset(struct mmc_host *host)
2290{ 2290{
2291 struct mmc_card *card = host->card; 2291 struct mmc_card *card = host->card;
2292 u32 status;
2292 2293
2293 if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset) 2294 if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
2294 return -EOPNOTSUPP; 2295 return -EOPNOTSUPP;
@@ -2305,13 +2306,9 @@ static int mmc_do_hw_reset(struct mmc_host *host, int check)
2305 host->ops->hw_reset(host); 2306 host->ops->hw_reset(host);
2306 2307
2307 /* If the reset has happened, then a status command will fail */ 2308 /* If the reset has happened, then a status command will fail */
2308 if (check) { 2309 if (!mmc_send_status(card, &status)) {
2309 u32 status; 2310 mmc_host_clk_release(host);
2310 2311 return -ENOSYS;
2311 if (!mmc_send_status(card, &status)) {
2312 mmc_host_clk_release(host);
2313 return -ENOSYS;
2314 }
2315 } 2312 }
2316 2313
2317 /* Set initial state and call mmc_set_ios */ 2314 /* Set initial state and call mmc_set_ios */
@@ -2321,19 +2318,8 @@ static int mmc_do_hw_reset(struct mmc_host *host, int check)
2321 2318
2322 return host->bus_ops->power_restore(host); 2319 return host->bus_ops->power_restore(host);
2323} 2320}
2324
2325int mmc_hw_reset(struct mmc_host *host)
2326{
2327 return mmc_do_hw_reset(host, 0);
2328}
2329EXPORT_SYMBOL(mmc_hw_reset); 2321EXPORT_SYMBOL(mmc_hw_reset);
2330 2322
2331int mmc_hw_reset_check(struct mmc_host *host)
2332{
2333 return mmc_do_hw_reset(host, 1);
2334}
2335EXPORT_SYMBOL(mmc_hw_reset_check);
2336
2337static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq) 2323static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
2338{ 2324{
2339 host->f_init = freq; 2325 host->f_init = freq;