scsi: ufs: qcom: Only free platform MSIs when ESI is enabled

Otherwise, it will result in a NULL pointer dereference as below:

Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008
Call trace:
 mutex_lock+0xc/0x54
 platform_device_msi_free_irqs_all+0x14/0x20
 ufs_qcom_remove+0x34/0x48 [ufs_qcom]
 platform_remove+0x28/0x44
 device_remove+0x4c/0x80
 device_release_driver_internal+0xd8/0x178
 driver_detach+0x50/0x9c
 bus_remove_driver+0x6c/0xbc
 driver_unregister+0x30/0x60
 platform_driver_unregister+0x14/0x20
 ufs_qcom_pltform_exit+0x18/0xb94 [ufs_qcom]
 __arm64_sys_delete_module+0x180/0x260
 invoke_syscall+0x44/0x100
 el0_svc_common.constprop.0+0xc0/0xe0
 do_el0_svc+0x1c/0x28
 el0_svc+0x34/0xdc
 el0t_64_sync_handler+0xc0/0xc4
 el0t_64_sync+0x190/0x194

Cc: stable@vger.kernel.org # 6.3
Fixes: 519b6274a777 ("scsi: ufs: qcom: Add MCQ ESI config vendor specific ops")
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20241111-ufs_bug_fix-v1-2-45ad8b62f02e@linaro.org
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
index 3b592492e15209f6ad715bed636d550a4a07de2a..5220ec78021d61a4eed177d41ad10fbf8e6be383 100644 (file)
--- a/drivers/ufs/host/ufs-qcom.c
+++ b/drivers/ufs/host/ufs-qcom.c
@@ -1861,10 +1861,12 @@ static int ufs_qcom_probe(struct platform_device *pdev)
 static void ufs_qcom_remove(struct platform_device *pdev)
 {
        struct ufs_hba *hba =  platform_get_drvdata(pdev);
+       struct ufs_qcom_host *host = ufshcd_get_variant(hba);
 
        pm_runtime_get_sync(&(pdev)->dev);
        ufshcd_remove(hba);
-       platform_device_msi_free_irqs_all(hba->dev);
+       if (host->esi_enabled)
+               platform_device_msi_free_irqs_all(hba->dev);
 }
 
 static const struct of_device_id ufs_qcom_of_match[] __maybe_unused = {