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sumit.saxena@broadcom.com, Ranjan Kumar Subject: [PATCH v4 0/2] mpt3sas: Additional retries when reading specific registers Date: Tue, 29 Aug 2023 14:30:18 +0530 Message-Id: <20230829090020.5417-1-ranjan.kumar@broadcom.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="00000000000043bb7406040c0e31" Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org --00000000000043bb7406040c0e31 Content-Transfer-Encoding: 8bit Doorbell and Host diagnostic registers could return 0 even after 3 retries and that leads to occasional resets of the controllers, hence increased the retry count to thirty. v1->v2: -added a new patch for volatile as suggested by Greg KH. -renamed macro as suggested by Damien Le Moal. v2->v3: -Modified patch description with more details. v3->v4: - Code simplification Ranjan Kumar (2): mpt3sas: Perform additional retries if Doorbell read returns 0 mpt3sas: Removing volatile qualifier drivers/scsi/mpt3sas/mpi/mpi2.h | 2 +- drivers/scsi/mpt3sas/mpt3sas_base.c | 50 ++++++++++++++++++++--------- drivers/scsi/mpt3sas/mpt3sas_base.h | 3 +- 3 files changed, 38 insertions(+), 17 deletions(-) -- 2.31.1 --00000000000043bb7406040c0e31 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQbQYJKoZIhvcNAQcCoIIQXjCCEFoCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3EMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT AkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBS MyBQZXJzb25hbFNpZ24gMiBDQSAyMDIwMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA 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