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authorUlf Hansson <ulf.hansson@linaro.org>2020-02-04 11:54:43 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2020-03-24 16:35:39 +0300
commit40c96853fef1bdef13d2cd05b21d4f06b2de6321 (patch)
tree038cc329023db57c89bbaa1fdad36a63e0072582 /include/linux/mmc
parent6972096a03ae40f1365d2829f92fd19202b2b326 (diff)
downloadlinux-40c96853fef1bdef13d2cd05b21d4f06b2de6321.tar.xz
mmc: core: Enable re-use of mmc_blk_in_tran_state()
To allow subsequent changes to re-use the code from the static function mmc_blk_in_tran_state(), let's move it to a public header. While at it, let's also rename it to mmc_ready_for_data(), as to try to better describe its purpose. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Baolin Wang <baolin.wang7@gmail.com> Tested-by: Ludovic Barre <ludovic.barre@st.com> Reviewed-by: Ludovic Barre <ludovic.barre@st.com> Link: https://lore.kernel.org/r/20200204085449.32585-7-ulf.hansson@linaro.org
Diffstat (limited to 'include/linux/mmc')
-rw-r--r--include/linux/mmc/mmc.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index 897a87c4c827..4b85ef05a906 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -161,6 +161,16 @@ static inline bool mmc_op_multi(u32 opcode)
#define R1_STATE_PRG 7
#define R1_STATE_DIS 8
+static inline bool mmc_ready_for_data(u32 status)
+{
+ /*
+ * Some cards mishandle the status bits, so make sure to check both the
+ * busy indication and the card state.
+ */
+ return status & R1_READY_FOR_DATA &&
+ R1_CURRENT_STATE(status) == R1_STATE_TRAN;
+}
+
/*
* MMC/SD in SPI mode reports R1 status always, and R2 for SEND_STATUS
* R1 is the low order byte; R2 is the next highest byte, when present.