A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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sdhci: be more strict with get_min_clock() usage

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get_min_clock() makes sense only with NONSTANDARD_CLOCK quirk and when
set_clock() callback is specified.

The patch should cause no functional changes, it just makes the code
self-documented and avoids any possible misuse of get_min_clock().

Suggested-by: Pierre Ossman <[email protected]>
Signed-off-by: Anton Vorontsov <[email protected]>
Cc: Ian Molton <[email protected]>
Cc: Matt Fleming <[email protected]>
Cc: Philip Langdale <[email protected]>
Cc: Pierre Ossman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Anton Vorontsov 2009-09-22 16:45:08 -07:00 • committed by Linus Torvalds
commit e9510176ff
1 changed files with 2 additions and 1 deletions
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3
drivers/mmc/host/sdhci.c
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@ -1772,7 +1772,8 @@ int sdhci_add_host(struct sdhci_host *host)
* Set host parameters.
*/
mmc->ops = &sdhci_ops;
if (host->ops->get_min_clock)
if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK &&
host->ops->set_clock && host->ops->get_min_clock)
mmc->f_min = host->ops->get_min_clock(host);
else
mmc->f_min = host->max_clk / 256;