diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index f214a616386c..113bdb868c46 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -3048,6 +3048,8 @@ static int mtip_block_ioctl(struct block_device *dev, if (!dd) return -ENOTTY; + guard(mutex)(&dd->ioctl_mutex); + if (unlikely(test_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag))) return -ENOTTY; @@ -3086,6 +3088,8 @@ static int mtip_block_compat_ioctl(struct block_device *dev, if (!dd) return -ENOTTY; + guard(mutex)(&dd->ioctl_mutex); + if (unlikely(test_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag))) return -ENOTTY; @@ -3721,6 +3725,7 @@ static int mtip_pci_probe(struct pci_dev *pdev, dd = kzalloc_node(sizeof(struct driver_data), GFP_KERNEL, my_node); if (!dd) return -ENOMEM; + mutex_init(&dd->ioctl_mutex); /* Attach the private data to this PCI device. */ pci_set_drvdata(pdev, dd); @@ -3887,6 +3892,7 @@ static void mtip_pci_remove(struct pci_dev *pdev) } set_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag); + mutex_lock(&dd->ioctl_mutex); if (test_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag)) del_gendisk(dd->disk); @@ -3915,6 +3921,7 @@ static void mtip_pci_remove(struct pci_dev *pdev) /* De-initialize the protocol layer. */ mtip_hw_exit(dd); + mutex_unlock(&dd->ioctl_mutex); if (dd->isr_workq) { destroy_workqueue(dd->isr_workq); diff --git a/drivers/block/mtip32xx/mtip32xx.h b/drivers/block/mtip32xx/mtip32xx.h index f7328f19ac5c..0963c07b5845 100644 --- a/drivers/block/mtip32xx/mtip32xx.h +++ b/drivers/block/mtip32xx/mtip32xx.h @@ -12,6 +12,7 @@ #define __MTIP32XX_H__ #include +#include #include #include #include @@ -432,6 +433,7 @@ struct driver_data { struct request_queue *queue; /* Our request queue. */ struct blk_mq_tag_set tags; /* blk_mq tags */ + struct mutex ioctl_mutex; struct mtip_port *port; /* Pointer to the port data structure. */