[PATCH 4.15 002/168] i40iw: Correct Q1/XF object count equation

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



4.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Shiraz Saleem <shiraz.saleem@xxxxxxxxx>


[ Upstream commit fe99afd1febd74e0ef1fed7e3283f09effe1f4f0 ]

Lower Inbound RDMA Read Queue (Q1) object count by a factor of 2
as it is incorrectly doubled. Also, round up Q1 and Transmit FIFO (XF)
object count to power of 2 to satisfy hardware requirement.

Fixes: 86dbcd0f12e9 ("i40iw: add file to handle cqp calls")
Signed-off-by: Shiraz Saleem <shiraz.saleem@xxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/infiniband/hw/i40iw/i40iw_ctrl.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
@@ -3928,8 +3928,10 @@ enum i40iw_status_code i40iw_config_fpm_
 		hmc_info->hmc_obj[I40IW_HMC_IW_APBVT_ENTRY].cnt = 1;
 		hmc_info->hmc_obj[I40IW_HMC_IW_MR].cnt = mrwanted;
 
-		hmc_info->hmc_obj[I40IW_HMC_IW_XF].cnt = I40IW_MAX_WQ_ENTRIES * qpwanted;
-		hmc_info->hmc_obj[I40IW_HMC_IW_Q1].cnt = 4 * I40IW_MAX_IRD_SIZE * qpwanted;
+		hmc_info->hmc_obj[I40IW_HMC_IW_XF].cnt =
+			roundup_pow_of_two(I40IW_MAX_WQ_ENTRIES * qpwanted);
+		hmc_info->hmc_obj[I40IW_HMC_IW_Q1].cnt =
+			roundup_pow_of_two(2 * I40IW_MAX_IRD_SIZE * qpwanted);
 		hmc_info->hmc_obj[I40IW_HMC_IW_XFFL].cnt =
 			hmc_info->hmc_obj[I40IW_HMC_IW_XF].cnt / hmc_fpm_misc->xf_block_size;
 		hmc_info->hmc_obj[I40IW_HMC_IW_Q1FL].cnt =





[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]