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RDMA/bnxt_re: Proper rollback if the ioremap fails

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bnxt_qplib_alloc_dpi returns success even if ioremap fails.
Add the proper rollback when the ioremap fails and return
-ENOMEM status.

Fixes: 0ac20faf5d ("RDMA/bnxt_re: Reorg the bar mapping")
Fixes: 360da60d6c ("RDMA/bnxt_re: Enable low latency push")
Link: https://patch.msgid.link/r/20260615224751.232802-11-selvin.xavier@broadcom.com
Reviewed-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Selvin Xavier 2026-06-15 15:47:46 -07:00 committed by Jason Gunthorpe
parent dc95931b7e
commit 87267803a8
1 changed files with 11 additions and 0 deletions
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11
drivers/infiniband/hw/bnxt_re/qplib_res.c
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@ -764,9 +764,13 @@ int bnxt_qplib_alloc_dpi(struct bnxt_qplib_res *res,
break;
case BNXT_QPLIB_DPI_TYPE_WC:
dpi->dbr = ioremap_wc(umaddr, PAGE_SIZE);
if (!dpi->dbr)
goto fail_ioremap;
break;
default:
dpi->dbr = ioremap(umaddr, PAGE_SIZE);
if (!dpi->dbr)
goto fail_ioremap;
break;
}
@ -774,6 +778,13 @@ int bnxt_qplib_alloc_dpi(struct bnxt_qplib_res *res,
mutex_unlock(&res->dpi_tbl_lock);
return 0;
fail_ioremap:
/* Roll back the bit we just claimed. */
set_bit(bit_num, dpit->tbl);
dpit->app_tbl[bit_num] = NULL;
mutex_unlock(&res->dpi_tbl_lock);
return -ENOMEM;
}
int bnxt_qplib_dealloc_dpi(struct bnxt_qplib_res *res,