[PATCH v2 1/1] wwan: core: Use the bitmap API to allocate bitmaps

[PATCH v2 1/1] wwan: core: Use the bitmap API to allocate bitmaps

[Andy Shevchenko]

Use bitmap_zalloc() and bitmap_free() instead of hand-writing them.
It is less verbose and it improves the type checking and semantic.

While at it, add missing header inclusion (should be bitops.h,
but with the above change it becomes bitmap.h).

Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
v2: added tags (Loic, Sergey), resent after v6.6-rc1 is out (Jakub)
 drivers/net/wwan/wwan_core.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wwan/wwan_core.c b/drivers/net/wwan/wwan_core.c
index 284ab1f56391..87df60916960 100644
--- a/drivers/net/wwan/wwan_core.c
+++ b/drivers/net/wwan/wwan_core.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /* Copyright (c) 2021, Linaro Ltd <loic.poulain@linaro.org> */
 
+#include <linux/bitmap.h>
 #include <linux/err.h>
 #include <linux/errno.h>
 #include <linux/debugfs.h>
@@ -395,7 +396,7 @@ static int __wwan_port_dev_assign_name(struct wwan_port *port, const char *fmt)
 	char buf[0x20];
 	int id;
 
-	idmap = (unsigned long *)get_zeroed_page(GFP_KERNEL);
+	idmap = bitmap_zalloc(max_ports, GFP_KERNEL);
 	if (!idmap)
 		return -ENOMEM;
 
@@ -414,7 +415,7 @@ static int __wwan_port_dev_assign_name(struct wwan_port *port, const char *fmt)
 
 	/* Allocate unique id */
 	id = find_first_zero_bit(idmap, max_ports);
-	free_page((unsigned long)idmap);
+	bitmap_free(idmap);
 
 	snprintf(buf, sizeof(buf), fmt, id);	/* Name generation */
 
-- 
2.40.0.1.gaa8946217a0b

Re: [PATCH v2 1/1] wwan: core: Use the bitmap API to allocate bitmaps

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (main)
by Paolo Abeni <pabeni@redhat.com>:

On Mon, 11 Sep 2023 16:16:18 +0300 you wrote:
> Use bitmap_zalloc() and bitmap_free() instead of hand-writing them.
> It is less verbose and it improves the type checking and semantic.
> 
> While at it, add missing header inclusion (should be bitops.h,
> but with the above change it becomes bitmap.h).
> 
> Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
> Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> 
> [...]

Here is the summary with links:
  - [v2,1/1] wwan: core: Use the bitmap API to allocate bitmaps
    https://git.kernel.org/netdev/net-next/c/cd8bae858154

You are awesome, thank you!
-- 
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