From mboxrd@z Thu Jan 1 00:00:00 1970 From: thenzl@redhat.com (Tomas Henzl) Date: Wed, 14 Feb 2018 18:07:47 +0100 Subject: [V1] mpt3sas: Do not use 32-bit atomic request descriptor for Ventura controllers. In-Reply-To: <1518603397-3941-1-git-send-email-suganath-prabu.subramani@broadcom.com> References: <1518603397-3941-1-git-send-email-suganath-prabu.subramani@broadcom.com> Message-ID: On 02/14/2018 11:16 AM, Suganath Prabu S wrote: > Problem Statement: Sending I/O through 32 bit descriptors to > Ventura series of controller results in IO timeout on certain conditions. > > This error only occurs on systems with high I/O activity on > Ventura series controllers. > > Changes in this patch will prevent driver from using 32 bit descriptor > and use 64 bit Descriptors > > V1 Change set: > 1) In this patch removed callbacks as suggested by Hannes. > > Note: > This patch Should be applied on top of > https://www.spinics.net/lists/linux-scsi/msg117405.html > "Adding MPI Endpoint device support" patches. > > Signed-off-by: Suganath Prabu S Reviewed-by: Tomas Henzl Tomas