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authorJaehoon Chung <jh80.chung@samsung.com>2016-09-22 08:12:00 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2016-09-22 10:34:13 +0300
commit005d675aa1909ad70456dec8c5b0ba9b60b52d24 (patch)
tree8dbc1e349259676d92dadea5e9a1f18dba3b8902 /drivers/mmc/host/dw_mmc.c
parent3be7988674ab33565700a37b210f502563d932e6 (diff)
downloadlinux-005d675aa1909ad70456dec8c5b0ba9b60b52d24.tar.xz
mmc: dw_mmc: fix the spamming log message
When there is no Card which is set to "broken-cd", it's displayed a clock information continuously. Because it's polling for detecting card. This patch is fixed this problem. Fixes: 65257a0deed5 ("mmc: dw_mmc: remove UBSAN warning in dw_mci_setup_bus()") Reported-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/dw_mmc.c')
-rw-r--r--drivers/mmc/host/dw_mmc.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 32380d5d4f6b..767af2026f8b 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1112,11 +1112,12 @@ 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;
- 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 (clock != slot->__clk_old || 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);
/* disable clock */
mci_writel(host, CLKENA, 0);
@@ -1139,6 +1140,9 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
/* inform CIU */
mci_send_cmd(slot, sdmmc_cmd_bits, 0);
+
+ /* keep the last clock value that was requested from core */
+ slot->__clk_old = clock;
}
host->current_speed = clock;