RDMA/irdma: Fix SD index calculation

[ Upstream commit 8d158f4 ]

In some cases, it is possible for pble_rsrc->next_fpm_addr to be
larger than u32, so remove the u32 cast to avoid unintentional
truncation.

This fixes the following error that can be observed when registering
massive memory regions:

[  447.227494] (NULL ib_device): cqp opcode = 0x1f maj_err_code = 0xffff min_err_code = 0x800c
[  447.227505] (NULL ib_device): [Update PE SDs Cmd Error][op_code=21] status=-5 waiting=1 completion_err=1 maj=0xffff min=0x800c

Fixes: e8c4dbc ("RDMA/irdma: Add PBLE resource manager")
Signed-off-by: Jacob Moroni <[email protected]>
Link: https://patch.msgid.link/[email protected]
Acked-by: Tatyana Nikolova <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
(cherry picked from commit cd7e3bb8e20098630495a072c0a67dd0e5c503a0)
Signed-off-by: Wentao Guan <[email protected]>

Author: jakemoroni

drivers/infiniband/hw/irdma/pble.c

@@ -71,7 +71,7 @@ int irdma_hmc_init_pble(struct irdma_sc_dev *dev,
 static void get_sd_pd_idx(struct irdma_hmc_pble_rsrc *pble_rsrc,
 			  struct sd_pd_idx *idx)
 {
-	idx->sd_idx = (u32)pble_rsrc->next_fpm_addr / IRDMA_HMC_DIRECT_BP_SIZE;
+	idx->sd_idx = pble_rsrc->next_fpm_addr / IRDMA_HMC_DIRECT_BP_SIZE;
 	idx->pd_idx = (u32)(pble_rsrc->next_fpm_addr / IRDMA_HMC_PAGED_BP_SIZE);
 	idx->rel_pd_idx = (idx->pd_idx % IRDMA_HMC_PD_CNT_IN_SD);
 }