DL-Mirrors/kernel-tenderloin-3.0
0
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mmc: block: allow get_card_status() to return error status

Browse Source 
If the MMC_SEND_STATUS command is not successful, we should not return
a zero status word, but instead allow the caller to know positively
that an error occurred.

Convert the open-coded get_card_status() to use the helper function,
and provide definitions for the card state field.

Change-Id: Icfd6258af78a89c21abac386c556153fa3fac364
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Russell King - ARM Linux
2011-06-20 20:10:08 +01:00
committed by Ken Sumrall
parent d5b9284a58
commit 6be918e0b2
2 changed files with 19 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
include/linux/mmc/mmc.h
View File

@@ -140,6 +140,16 @@ static inline bool mmc_op_multi(u32 opcode)
#define R1_SWITCH_ERROR (1 << 7) /* sx, c */
#define R1_APP_CMD (1 << 5) /* sr, c */
#define R1_STATE_IDLE 0
#define R1_STATE_READY 1
#define R1_STATE_IDENT 2
#define R1_STATE_STBY 3
#define R1_STATE_TRAN 4
#define R1_STATE_DATA 5
#define R1_STATE_RCV 6
#define R1_STATE_PRG 7
#define R1_STATE_DIS 8
/*
* 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.