diff options
Diffstat (limited to 'drivers/s390/net/ism_drv.c')
| -rw-r--r-- | drivers/s390/net/ism_drv.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c index b7f15f303ea2..6cd60b174315 100644 --- a/drivers/s390/net/ism_drv.c +++ b/drivers/s390/net/ism_drv.c @@ -7,6 +7,7 @@ #define KMSG_COMPONENT "ism" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt +#include <linux/export.h> #include <linux/module.h> #include <linux/types.h> #include <linux/interrupt.h> @@ -130,6 +131,7 @@ static int ism_cmd(struct ism_dev *ism, void *cmd) struct ism_req_hdr *req = cmd; struct ism_resp_hdr *resp = cmd; + spin_lock(&ism->cmd_lock); __ism_write_cmd(ism, req + 1, sizeof(*req), req->len - sizeof(*req)); __ism_write_cmd(ism, req, 0, sizeof(*req)); @@ -143,6 +145,7 @@ static int ism_cmd(struct ism_dev *ism, void *cmd) } __ism_read_cmd(ism, resp + 1, sizeof(*resp), resp->len - sizeof(*resp)); out: + spin_unlock(&ism->cmd_lock); return resp->ret; } @@ -606,6 +609,7 @@ static int ism_probe(struct pci_dev *pdev, const struct pci_device_id *id) return -ENOMEM; spin_lock_init(&ism->lock); + spin_lock_init(&ism->cmd_lock); dev_set_drvdata(&pdev->dev, ism); ism->pdev = pdev; ism->dev.parent = &pdev->dev; |