diff options
| -rw-r--r-- | drivers/pci/endpoint/functions/pci-epf-vntb.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/pci/endpoint/functions/pci-epf-vntb.c b/drivers/pci/endpoint/functions/pci-epf-vntb.c index d31e2eee0869..818ae5999976 100644 --- a/drivers/pci/endpoint/functions/pci-epf-vntb.c +++ b/drivers/pci/endpoint/functions/pci-epf-vntb.c @@ -67,7 +67,6 @@ static struct workqueue_struct *kpcintb_workqueue; #define NTB_MW_OFFSET 2 #define DB_COUNT_MASK GENMASK(15, 0) #define MSIX_ENABLE BIT(16) -#define MAX_DB_COUNT 32 #define MAX_MW 4 /* Limit per-work execution to avoid monopolizing kworker on doorbell storms. */ @@ -89,6 +88,9 @@ enum epf_irq_slot { EPF_IRQ_DB_START, }; +#define MIN_DB_COUNT (EPF_IRQ_DB_START + 1) +#define MAX_DB_COUNT 32 + /* * +--------------------------------------------------+ Base * | | @@ -512,9 +514,9 @@ static int epf_ntb_configure_interrupt(struct epf_ntb *ntb) return -EINVAL; } - if (!ntb->db_count || ntb->db_count > MAX_DB_COUNT) { - dev_err(dev, "DB count %d out of range (1 - %d)\n", - ntb->db_count, MAX_DB_COUNT); + if (ntb->db_count < MIN_DB_COUNT || ntb->db_count > MAX_DB_COUNT) { + dev_err(dev, "DB count %d out of range (%d - %d)\n", + ntb->db_count, MIN_DB_COUNT, MAX_DB_COUNT); return -EINVAL; } |