diff mbox series

[net-next,10/15] mlxsw: pci: Remove unused wait queue

Message ID f3af6a5a9dabd97d2920cefe475c6aa57767f504.1712062203.git.petrm@nvidia.com (mailing list archive)
State Accepted
Commit 2c200863fcc78ec1797b0a7a36303e9466b0617d
Delegated to: Netdev Maintainers
Headers show
Series mlxsw: Preparations for improving performance | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 943 this patch: 943
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 954 this patch: 954
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 954 this patch: 954
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 55 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-04-03--09-00 (tests: 950)

Commit Message

Petr Machata April 2, 2024, 1:54 p.m. UTC 
From: Amit Cohen <amcohen@nvidia.com>

The previous patch changed the code to do not handle command interface
from event queue. With this change the wait queue is not used anymore.
Remove it and 'wait_done' variable.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlxsw/pci.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

Comments

Simon Horman April 3, 2024, 12:39 p.m. UTC | #1 
On Tue, Apr 02, 2024 at 03:54:23PM +0200, Petr Machata wrote:
> From: Amit Cohen <amcohen@nvidia.com>
> 
> The previous patch changed the code to do not handle command interface
> from event queue. With this change the wait queue is not used anymore.
> Remove it and 'wait_done' variable.
> 
> Signed-off-by: Amit Cohen <amcohen@nvidia.com>
> Reviewed-by: Ido Schimmel <idosch@nvidia.com>
> Signed-off-by: Petr Machata <petrm@nvidia.com>

Reviewed-by: Simon Horman <horms@kernel.org>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c
index 3460a4ef7d9a..7f059306af5a 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/pci.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/pci.c
@@ -8,7 +8,6 @@ 
 #include <linux/device.h>
 #include <linux/pci.h>
 #include <linux/interrupt.h>
-#include <linux/wait.h>
 #include <linux/types.h>
 #include <linux/skbuff.h>
 #include <linux/if_vlan.h>
@@ -111,8 +110,6 @@  struct mlxsw_pci {
 		struct mlxsw_pci_mem_item out_mbox;
 		struct mlxsw_pci_mem_item in_mbox;
 		struct mutex lock; /* Lock access to command registers */
-		wait_queue_head_t wait;
-		bool wait_done;
 		struct {
 			u8 status;
 			u64 out_param;
@@ -1819,8 +1816,8 @@  static int mlxsw_pci_cmd_exec(void *bus_priv, u16 opcode, u8 opcode_mod,
 	struct mlxsw_pci *mlxsw_pci = bus_priv;
 	dma_addr_t in_mapaddr = 0, out_mapaddr = 0;
 	unsigned long timeout = msecs_to_jiffies(MLXSW_PCI_CIR_TIMEOUT_MSECS);
-	bool *p_wait_done = &mlxsw_pci->cmd.wait_done;
 	unsigned long end;
+	bool wait_done;
 	int err;
 
 	*p_status = MLXSW_CMD_STATUS_OK;
@@ -1844,7 +1841,7 @@  static int mlxsw_pci_cmd_exec(void *bus_priv, u16 opcode, u8 opcode_mod,
 	mlxsw_pci_write32(mlxsw_pci, CIR_IN_MODIFIER, in_mod);
 	mlxsw_pci_write32(mlxsw_pci, CIR_TOKEN, 0);
 
-	*p_wait_done = false;
+	wait_done = false;
 
 	wmb(); /* all needs to be written before we write control register */
 	mlxsw_pci_write32(mlxsw_pci, CIR_CTRL,
@@ -1857,7 +1854,7 @@  static int mlxsw_pci_cmd_exec(void *bus_priv, u16 opcode, u8 opcode_mod,
 		u32 ctrl = mlxsw_pci_read32(mlxsw_pci, CIR_CTRL);
 
 		if (!(ctrl & MLXSW_PCI_CIR_CTRL_GO_BIT)) {
-			*p_wait_done = true;
+			wait_done = true;
 			*p_status = ctrl >> MLXSW_PCI_CIR_CTRL_STATUS_SHIFT;
 			break;
 		}
@@ -1865,7 +1862,7 @@  static int mlxsw_pci_cmd_exec(void *bus_priv, u16 opcode, u8 opcode_mod,
 	} while (time_before(jiffies, end));
 
 	err = 0;
-	if (*p_wait_done) {
+	if (wait_done) {
 		if (*p_status)
 			err = -EIO;
 	} else {
@@ -1963,7 +1960,6 @@  static int mlxsw_pci_cmd_init(struct mlxsw_pci *mlxsw_pci)
 	int err;
 
 	mutex_init(&mlxsw_pci->cmd.lock);
-	init_waitqueue_head(&mlxsw_pci->cmd.wait);
 
 	err = mlxsw_pci_mbox_alloc(mlxsw_pci, &mlxsw_pci->cmd.in_mbox);
 	if (err)