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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2014-06-12 15:01:57 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2014-08-11 10:24:15 +0200 |
| commit | ad82bfea44835da9633548e2031a1af4a9965c14 (patch) | |
| tree | 83e7246c20e4c6fdcd1e76af9415c2216cc0e267 /drivers/mmc/host/mmci.c | |
| parent | 1cb9da502835dad73dda772b20c1e792f4e71589 (diff) | |
| download | linux-stable-ad82bfea44835da9633548e2031a1af4a9965c14.tar.gz linux-stable-ad82bfea44835da9633548e2031a1af4a9965c14.tar.bz2 linux-stable-ad82bfea44835da9633548e2031a1af4a9965c14.zip | |
mmc: mmci: Move all CMD irq handling to mmci_cmd_irq()
This patch won't change the behavior of how mmci deals with CMD irqs.
By moving code from mmci_irq() to mmci_cmd_irq(), we getter a better
overview of what going on.
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Tested-by: Kees Cook <keescook@chromium.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/mmci.c')
| -rw-r--r-- | drivers/mmc/host/mmci.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index a723ed2883f9..5d20bfba3e49 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -960,9 +960,17 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd, unsigned int status) { void __iomem *base = host->base; - bool sbc = (cmd == host->mrq->sbc); - bool busy_resp = host->variant->busy_detect && - (cmd->flags & MMC_RSP_BUSY); + bool sbc, busy_resp; + + if (!cmd) + return; + + sbc = (cmd == host->mrq->sbc); + busy_resp = host->variant->busy_detect && (cmd->flags & MMC_RSP_BUSY); + + if (!((status|host->busy_status) & (MCI_CMDCRCFAIL|MCI_CMDTIMEOUT| + MCI_CMDSENT|MCI_CMDRESPEND))) + return; /* Check if we need to wait for busy completion. */ if (host->busy_status && (status & MCI_ST_CARDBUSY)) @@ -1209,8 +1217,6 @@ static irqreturn_t mmci_irq(int irq, void *dev_id) spin_lock(&host->lock); do { - struct mmc_command *cmd; - status = readl(host->base + MMCISTATUS); if (host->singleirq) { @@ -1230,11 +1236,7 @@ static irqreturn_t mmci_irq(int irq, void *dev_id) dev_dbg(mmc_dev(host->mmc), "irq0 (data+cmd) %08x\n", status); - cmd = host->cmd; - if ((status|host->busy_status) & (MCI_CMDCRCFAIL|MCI_CMDTIMEOUT| - MCI_CMDSENT|MCI_CMDRESPEND) && cmd) - mmci_cmd_irq(host, cmd, status); - + mmci_cmd_irq(host, host->cmd, status); mmci_data_irq(host, host->data, status); /* Don't poll for busy completion in irq context. */ |