From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adrian Hunter Subject: [PATCH 13/13] mmc: sdhci: Transfer Complete has higher priority than Data Timeout Error Date: Mon, 22 Sep 2014 13:17:44 +0300 Message-ID: <1411381064-1703-14-git-send-email-adrian.hunter@intel.com> References: <1411381064-1703-1-git-send-email-adrian.hunter@intel.com> Return-path: Received: from mga02.intel.com ([134.134.136.20]:45567 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753698AbaIVKTe (ORCPT ); Mon, 22 Sep 2014 06:19:34 -0400 In-Reply-To: <1411381064-1703-1-git-send-email-adrian.hunter@intel.com> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Ulf Hansson , Chris Ball Cc: linux-mmc According to the SD Host Controller Standard Specification: "...Transfer Complete has higher priority than Data Timeout Error. If both bits are set to 1, execution of a command can be considered to be completed." Adjust the checking of SDHCI_INT_DATA_TIMEOUT and SDHCI_INT_DATA_END (Transfer Complete) accordingly. Signed-off-by: Adrian Hunter --- drivers/mmc/host/sdhci.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 8588550..6ada726 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2332,11 +2332,6 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) * above in sdhci_cmd_irq(). */ if (host->cmd && (host->cmd->flags & MMC_RSP_BUSY)) { - if (intmask & SDHCI_INT_DATA_TIMEOUT) { - host->cmd->error = -ETIMEDOUT; - tasklet_schedule(&host->finish_tasklet); - return; - } if (intmask & SDHCI_INT_DATA_END) { /* * Some cards handle busy-end interrupt @@ -2349,6 +2344,11 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) host->busy_handle = 1; return; } + if (intmask & SDHCI_INT_DATA_TIMEOUT) { + host->cmd->error = -ETIMEDOUT; + tasklet_schedule(&host->finish_tasklet); + return; + } } pr_err("%s: Got data interrupt 0x%08x even " @@ -2359,7 +2359,8 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) return; } - if (intmask & SDHCI_INT_DATA_TIMEOUT) + if ((intmask & SDHCI_INT_DATA_TIMEOUT) && + !(intmask & SDHCI_INT_DATA_END)) host->data->error = -ETIMEDOUT; else if (intmask & SDHCI_INT_DATA_END_BIT) host->data->error = -EILSEQ; -- 1.8.3.2