diff options
| author | Michał Mirosław <mirq-linux@rere.qmqm.pl> | 2020-01-02 13:54:58 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2020-01-20 13:54:45 +0300 |
| commit | 661cf2d8973a0211be8d4ee1430b66690b291e83 (patch) | |
| tree | 34346e5c45a59bc227b4e0a03d58ccc01a479836 /drivers/mmc | |
| parent | 557c03157c277cab1e895866ea4f7cc725964870 (diff) | |
| download | linux-661cf2d8973a0211be8d4ee1430b66690b291e83.tar.xz | |
mmc: core: limit probe clock frequency to configured f_max
Currently MMC core disregards host->f_max during card initialization
phase. Obey upper boundary for the clock frequency and skip faster
speeds when they are above the limit.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Link: https://lore.kernel.org/r/f471bceaf237d582d746bd289c4c4f3639cb7b45.1577962382.git.mirq-linux@rere.qmqm.pl
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/core.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index abf8f5eb0a1c..aa54d359dab7 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -2330,7 +2330,13 @@ void mmc_rescan(struct work_struct *work) } for (i = 0; i < ARRAY_SIZE(freqs); i++) { - if (!mmc_rescan_try_freq(host, max(freqs[i], host->f_min))) + unsigned int freq = freqs[i]; + if (freq > host->f_max) { + if (i + 1 < ARRAY_SIZE(freqs)) + continue; + freq = host->f_max; + } + if (!mmc_rescan_try_freq(host, max(freq, host->f_min))) break; if (freqs[i] <= host->f_min) break; @@ -2344,7 +2350,7 @@ void mmc_rescan(struct work_struct *work) void mmc_start_host(struct mmc_host *host) { - host->f_init = max(freqs[0], host->f_min); + host->f_init = max(min(freqs[0], host->f_max), host->f_min); host->rescan_disable = 0; host->ios.power_mode = MMC_POWER_UNDEFINED; |