From mboxrd@z Thu Jan 1 00:00:00 1970 From: sergei.shtylyov@cogentembedded.com (Sergei Shtylyov) Date: Mon, 02 Feb 2015 13:47:28 +0300 Subject: [PATCH v1] ahci_xgene: Fix the dma state machine lockup for the ATA_CMD_SMART PIO mode command. In-Reply-To: <1422872328-16700-2-git-send-email-stripathi@apm.com> References: <1422872328-16700-1-git-send-email-stripathi@apm.com> <1422872328-16700-2-git-send-email-stripathi@apm.com> Message-ID: <54CF55C0.5080404@cogentembedded.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hello. On 2/2/2015 1:18 PM, Suman Tripathi wrote: > This patch addresses the issue with ATA_CMD_SMART pio mode > command for enumeration and device detection with ATA devices. > The X-Gene AHCI controller has an errata in which it cannot clear > the BSY bit after the PIO setup FIS. The dma state machine enters > CMFatalErrorUpdate state and locks up. It is the same issue as > in the patch(Commit ID : 2a0bdff6b958d1b2523d2754b6cd5e0ea4053016). Just "in the commit 2a0bdff6b958d1b2523d2754b6cd5e0ea4053016". And you also need to specify the commit's summary line in parens. > Signed-off-by: Suman Tripathi WBR, Sergei