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mmc: dw_mmc: display the clock message only one time when card is polling

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When card is polling (broken-cd), there is a spamming messge related to
clock.
After applied this patch, display the message only one time at boot
time. It's enough to check which clock values is used.
Also prevent to display the spamming message.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Jaehoon Chung 2016-11-24 20:04:42 +09:00 committed by Ulf Hansson
parent d10111cf85
commit e6cd7a8ea1
2 changed files with 13 additions and 1 deletions
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13
drivers/mmc/host/dw_mmc.c
View file

@ -1176,13 +1176,24 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
div = (host->bus_hz != clock) ? DIV_ROUND_UP(div, 2) : 0;
if (clock != slot->__clk_old || force_clkinit)
if ((clock != slot->__clk_old &&
!test_bit(DW_MMC_CARD_NEEDS_POLL, &slot->flags)) ||
force_clkinit) {
dev_info(&slot->mmc->class_dev,
"Bus speed (slot %d) = %dHz (slot req %dHz, actual %dHZ div = %d)\n",
slot->id, host->bus_hz, clock,
div ? ((host->bus_hz / div) >> 1) :
host->bus_hz, div);
/*
* If card is polling, display the message only
* one time at boot time.
*/
if (slot->mmc->caps & MMC_CAP_NEEDS_POLL &&
slot->mmc->f_min == clock)
set_bit(DW_MMC_CARD_NEEDS_POLL, &slot->flags);
}
/* disable clock */
mci_writel(host, CLKENA, 0);
mci_writel(host, CLKSRC, 0);

1
drivers/mmc/host/dw_mmc.h
View file

@ -272,6 +272,7 @@ struct dw_mci_slot {
#define DW_MMC_CARD_NEED_INIT 1
#define DW_MMC_CARD_NO_LOW_PWR 2
#define DW_MMC_CARD_NO_USE_HOLD 3
#define DW_MMC_CARD_NEEDS_POLL 4
int id;
int sdio_id;
};