diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_attr.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_attr.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index adf97320574..1dd8591bd5c 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -428,6 +428,19 @@ qla2x00_sysfs_read_sfp(struct kobject *kobj, if (!capable(CAP_SYS_ADMIN) || off != 0 || count != SFP_DEV_SIZE * 2) return 0; + if (ha->sfp_data) + goto do_read; + + ha->sfp_data = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, + &ha->sfp_data_dma); + if (!ha->sfp_data) { + qla_printk(KERN_WARNING, ha, + "Unable to allocate memory for SFP read-data.\n"); + return 0; + } + +do_read: + memset(ha->sfp_data, 0, SFP_BLOCK_SIZE); addr = 0xa0; for (iter = 0, offset = 0; iter < (SFP_DEV_SIZE * 2) / SFP_BLOCK_SIZE; iter++, offset += SFP_BLOCK_SIZE) { |