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[95.91.236.49]) by smtp.gmail.com with ESMTPSA id a3sm3976850wrx.38.2021.08.17.15.42.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Aug 2021 15:42:49 -0700 (PDT) From: Bean Huo To: ulf.hansson@linaro.org, adrian.hunter@intel.com Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, Bean Huo Subject: [PATCH v1 1/2] mmc: core: Issue HPI in case the BKOPS timed out Date: Wed, 18 Aug 2021 00:42:07 +0200 Message-Id: <20210817224208.153652-2-huobean@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210817224208.153652-1-huobean@gmail.com> References: <20210817224208.153652-1-huobean@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org From: Bean Huo If the BKOPS timed out, the card is probably still busy in the R1_STATE_PRG. Rather than let application in the userland continue to wait, let's try to abort it with a HPI command to get back into R1_STATE_TRAN. Signed-off-by: Bean Huo --- drivers/mmc/core/mmc_ops.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 90d213a2203f..0c54858e89c0 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -959,8 +959,15 @@ void mmc_run_bkops(struct mmc_card *card) */ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BKOPS_START, 1, MMC_BKOPS_TIMEOUT_MS); - if (err) - pr_warn("%s: Error %d starting bkops\n", + /* + * If the BKOPS timed out, the card is probably still busy in the + * R1_STATE_PRG. Rather than continue to wait, let's try to abort + * it with a HPI command to get back into R1_STATE_TRAN. + */ + if (err == -ETIMEDOUT && !mmc_interrupt_hpi(card)) + pr_warn("%s: BKOPS aborted\n", mmc_hostname(card->host)); + else if (err) + pr_warn("%s: Error %d running bkops\n", mmc_hostname(card->host), err); mmc_retune_release(card->host);