From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 311A72EB0B; Mon, 1 Apr 2024 16:56:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711990567; cv=none; b=ObDfdZLy1TD++h3EMoGhWnnmas3yV53p9fu4oFogz4RtzgCvc66H6l+XTr3ppbs738R7r/twAVvlQ9NHm8BdFUbxCkIZfscTH1nCpjoEootxeLyES466gzmJpzcx8T0Rw2HVGaICmglmYKfC8GJcnC9ZMwyeTTtZWTsaJhdyX/Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711990567; c=relaxed/simple; bh=s58ct+hF5ud/BVRZ9ZsKLbq//S2/mH9wjITzR/v28Js=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SyI0BtLC3DeoctBNKp4uqf/ZQrRUGIV1YCM27u4LtytjiYr+tTKZcV7R0Gs2OZOsnAL+X81RKTma5zHzJyIFWlatED/KQHH52uxZ1oFz5Y5fADvbXlCMIsgfwWSio1RXhdoVlbPLjNyWgbtN1m9S9QyCupk21/aG62NwmZO/0+U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=eNtffWgP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="eNtffWgP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id ADA2DC433C7; Mon, 1 Apr 2024 16:56:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1711990567; bh=s58ct+hF5ud/BVRZ9ZsKLbq//S2/mH9wjITzR/v28Js=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eNtffWgP09SOzjQa3m5CW5rsh+DOojsOqApaiTpkq46f6+X/50hu59nRbKeOqsFuE TCpwgr+yYOhuA3pbJ4UIRYoqCsx8C2nLJRZRRk1/6l7wPNZsoLuinyCxZhp1D0OGzC VSXRJ9wsR4e5ofDDDx5rgR1AgjQEwJUt04lux1Y0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Xingui Yang , John Garry , "Martin K. Petersen" Subject: [PATCH 6.6 394/396] scsi: libsas: Fix disk not being scanned in after being removed Date: Mon, 1 Apr 2024 17:47:23 +0200 Message-ID: <20240401152559.655820243@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240401152547.867452742@linuxfoundation.org> References: <20240401152547.867452742@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Xingui Yang commit 8e68a458bcf5b5cb9c3624598bae28f08251601f upstream. As of commit d8649fc1c5e4 ("scsi: libsas: Do discovery on empty PHY to update PHY info"), do discovery will send a new SMP_DISCOVER and update phy->phy_change_count. We found that if the disk is reconnected and phy change_count changes at this time, the disk scanning process will not be triggered. Therefore, call sas_set_ex_phy() to update the PHY info with the results of the last query. And because the previous phy info will be used when calling sas_unregister_devs_sas_addr(), sas_unregister_devs_sas_addr() should be called before sas_set_ex_phy(). Fixes: d8649fc1c5e4 ("scsi: libsas: Do discovery on empty PHY to update PHY info") Signed-off-by: Xingui Yang Link: https://lore.kernel.org/r/20240307141413.48049-3-yangxingui@huawei.com Reviewed-by: John Garry Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/libsas/sas_expander.c | 32 ++++++++++++++++++++++---------- 1 file changed, 22 insertions(+), 10 deletions(-) --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -1945,6 +1945,7 @@ static int sas_rediscover_dev(struct dom struct expander_device *ex = &dev->ex_dev; struct ex_phy *phy = &ex->ex_phy[phy_id]; enum sas_device_type type = SAS_PHY_UNUSED; + struct smp_disc_resp *disc_resp; u8 sas_addr[SAS_ADDR_SIZE]; char msg[80] = ""; int res; @@ -1956,33 +1957,41 @@ static int sas_rediscover_dev(struct dom SAS_ADDR(dev->sas_addr), phy_id, msg); memset(sas_addr, 0, SAS_ADDR_SIZE); - res = sas_get_phy_attached_dev(dev, phy_id, sas_addr, &type); + disc_resp = alloc_smp_resp(DISCOVER_RESP_SIZE); + if (!disc_resp) + return -ENOMEM; + + res = sas_get_phy_discover(dev, phy_id, disc_resp); switch (res) { case SMP_RESP_NO_PHY: phy->phy_state = PHY_NOT_PRESENT; sas_unregister_devs_sas_addr(dev, phy_id, last); - return res; + goto out_free_resp; case SMP_RESP_PHY_VACANT: phy->phy_state = PHY_VACANT; sas_unregister_devs_sas_addr(dev, phy_id, last); - return res; + goto out_free_resp; case SMP_RESP_FUNC_ACC: break; case -ECOMM: break; default: - return res; + goto out_free_resp; } + if (res == 0) + sas_get_sas_addr_and_dev_type(disc_resp, sas_addr, &type); + if ((SAS_ADDR(sas_addr) == 0) || (res == -ECOMM)) { phy->phy_state = PHY_EMPTY; sas_unregister_devs_sas_addr(dev, phy_id, last); /* - * Even though the PHY is empty, for convenience we discover - * the PHY to update the PHY info, like negotiated linkrate. + * Even though the PHY is empty, for convenience we update + * the PHY info, like negotiated linkrate. */ - sas_ex_phy_discover(dev, phy_id); - return res; + if (res == 0) + sas_set_ex_phy(dev, phy_id, disc_resp); + goto out_free_resp; } else if (SAS_ADDR(sas_addr) == SAS_ADDR(phy->attached_sas_addr) && dev_type_flutter(type, phy->attached_dev_type)) { struct domain_device *ata_dev = sas_ex_to_ata(dev, phy_id); @@ -1994,7 +2003,7 @@ static int sas_rediscover_dev(struct dom action = ", needs recovery"; pr_debug("ex %016llx phy%02d broadcast flutter%s\n", SAS_ADDR(dev->sas_addr), phy_id, action); - return res; + goto out_free_resp; } /* we always have to delete the old device when we went here */ @@ -2003,7 +2012,10 @@ static int sas_rediscover_dev(struct dom SAS_ADDR(phy->attached_sas_addr)); sas_unregister_devs_sas_addr(dev, phy_id, last); - return sas_discover_new(dev, phy_id); + res = sas_discover_new(dev, phy_id); +out_free_resp: + kfree(disc_resp); + return res; } /**