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([2001:250:5800:1002::de93]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-39e6cae997csm395136a91.11.2026.09.18.10.25.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Sep 2026 10:25:50 -0700 (PDT) From: Guangshuo Li To: "James E.J. Bottomley" , "Martin K. Petersen" , Anil Ravindranath , James Bottomley , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Guangshuo Li , stable@vger.kernel.org Subject: [PATCH] scsi: pmcraid: decrement adapter count on remove Date: Sat, 19 Sep 2026 01:25:41 +0800 Message-ID: <20260918172541.3599902-1-lgs201920130244@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" pmcraid_probe() increments pmcraid_adapter_count when an adapter is being initialized. All probe failure paths decrement the count again, but the normal remove path does not perform the corresponding cleanup. As a result, the adapter count remains incremented after a device is removed. Repeated bind and unbind cycles can eventually make the count reach PMCRAID_MAX_ADAPTERS and prevent otherwise valid adapters from being probed. Decrement pmcraid_adapter_count in pmcraid_remove(), matching the probe error path. This issue was found by manual code inspection. Fixes: 89a368104150 ("[SCSI] pmcraid: PMC-Sierra MaxRAID driver to support = 6Gb/s SAS RAID controller") Cc: stable@vger.kernel.org Signed-off-by: Guangshuo Li --- drivers/scsi/pmcraid.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c index 942a99393204..da80f1d39ec4 100644 --- a/drivers/scsi/pmcraid.c +++ b/drivers/scsi/pmcraid.c @@ -4778,6 +4778,7 @@ static void pmcraid_remove(struct pci_dev *pdev) iounmap(pinstance->mapped_dma_addr); pci_release_regions(pdev); scsi_host_put(pinstance->host); + atomic_dec(&pmcraid_adapter_count); pci_disable_device(pdev); =20 return; --=20 2.43.0