[06/12] mmc: core: Enable re-use of mmc_blk_in_tran_state()

Message ID 20200204085449.32585-7-ulf.hansson@linaro.org
State New
Headers show
Series
  • mmc: core: Improve code for polling and HW busy detect
Related show

Commit Message

Ulf Hansson Feb. 4, 2020, 8:54 a.m.
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>

---
 drivers/mmc/core/block.c | 24 ++++--------------------
 include/linux/mmc/mmc.h  | 10 ++++++++++
 2 files changed, 14 insertions(+), 20 deletions(-)

-- 
2.17.1

Patch

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 663d87924e5e..8ac12e3fff27 100644
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -436,16 +436,6 @@  static int ioctl_do_sanitize(struct mmc_card *card)
 	return err;
 }
 
-static inline bool mmc_blk_in_tran_state(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);
-}
-
 static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms,
 			    u32 *resp_errs)
 {
@@ -477,13 +467,7 @@  static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms,
 				 __func__, status);
 			return -ETIMEDOUT;
 		}
-
-		/*
-		 * Some cards mishandle the status bits,
-		 * so make sure to check both the busy
-		 * indication and the card state.
-		 */
-	} while (!mmc_blk_in_tran_state(status));
+	} while (!mmc_ready_for_data(status));
 
 	return err;
 }
@@ -1666,7 +1650,7 @@  static void mmc_blk_read_single(struct mmc_queue *mq, struct request *req)
 			goto error_exit;
 
 		if (!mmc_host_is_spi(host) &&
-		    !mmc_blk_in_tran_state(status)) {
+		    !mmc_ready_for_data(status)) {
 			err = mmc_blk_fix_state(card, req);
 			if (err)
 				goto error_exit;
@@ -1726,7 +1710,7 @@  static bool mmc_blk_status_error(struct request *req, u32 status)
 	return brq->cmd.resp[0]  & CMD_ERRORS    ||
 	       brq->stop.resp[0] & stop_err_bits ||
 	       status            & stop_err_bits ||
-	       (rq_data_dir(req) == WRITE && !mmc_blk_in_tran_state(status));
+	       (rq_data_dir(req) == WRITE && !mmc_ready_for_data(status));
 }
 
 static inline bool mmc_blk_cmd_started(struct mmc_blk_request *brq)
@@ -1788,7 +1772,7 @@  static void mmc_blk_mq_rw_recovery(struct mmc_queue *mq, struct request *req)
 
 	/* Try to get back to "tran" state */
 	if (!mmc_host_is_spi(mq->card->host) &&
-	    (err || !mmc_blk_in_tran_state(status)))
+	    (err || !mmc_ready_for_data(status)))
 		err = mmc_blk_fix_state(mq->card, req);
 
 	/*
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.