diff options
| author | Ulf Hansson <ulf.hansson@linaro.org> | 2014-01-28 13:05:39 (GMT) |
|---|---|---|
| committer | Chris Ball <chris@printf.net> | 2014-02-23 15:40:34 (GMT) |
| commit | 636bd13c12d2331ad835b89681428eccb4cf102e (patch) | |
| tree | 83fcd92867bfbb3fa61c71ba4eea3f8b0e3b14bb /drivers/mmc/core | |
| parent | 4509f847751c9d2a724f37fe831393fbac34b80f (diff) | |
| download | linux-636bd13c12d2331ad835b89681428eccb4cf102e.tar.xz | |
mmc: core: Minor simplifications to __mmc_switch
Instead of using several references to card->host, let's use a local
variable. That means we can remove the BUG_ON verifications for the
same pointers.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/mmc_ops.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 5e1a2cb..04ecdb9 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -413,14 +413,12 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, unsigned int timeout_ms, bool use_busy_signal, bool send_status, bool ignore_crc) { + struct mmc_host *host = card->host; int err; struct mmc_command cmd = {0}; unsigned long timeout; u32 status = 0; - BUG_ON(!card); - BUG_ON(!card->host); - cmd.opcode = MMC_SWITCH; cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | (index << 16) | @@ -437,7 +435,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, if (index == EXT_CSD_SANITIZE_START) cmd.sanitize_busy = true; - err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES); + err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); if (err) return err; @@ -449,7 +447,7 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, * CRC errors shall only be ignored in cases were CMD13 is used to poll * to detect busy completion. */ - if (card->host->caps & MMC_CAP_WAIT_WHILE_BUSY) + if (host->caps & MMC_CAP_WAIT_WHILE_BUSY) ignore_crc = false; /* Must check status to be sure of no errors. */ @@ -460,9 +458,9 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, if (err) return err; } - if (card->host->caps & MMC_CAP_WAIT_WHILE_BUSY) + if (host->caps & MMC_CAP_WAIT_WHILE_BUSY) break; - if (mmc_host_is_spi(card->host)) + if (mmc_host_is_spi(host)) break; /* @@ -478,18 +476,18 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, /* Timeout if the device never leaves the program state. */ if (time_after(jiffies, timeout)) { pr_err("%s: Card stuck in programming state! %s\n", - mmc_hostname(card->host), __func__); + mmc_hostname(host), __func__); return -ETIMEDOUT; } } while (R1_CURRENT_STATE(status) == R1_STATE_PRG); - if (mmc_host_is_spi(card->host)) { + if (mmc_host_is_spi(host)) { if (status & R1_SPI_ILLEGAL_COMMAND) return -EBADMSG; } else { if (status & 0xFDFFA000) - pr_warning("%s: unexpected status %#x after " - "switch", mmc_hostname(card->host), status); + pr_warn("%s: unexpected status %#x after switch\n", + mmc_hostname(host), status); if (status & R1_SWITCH_ERROR) return -EBADMSG; } |