linux-kernel - [PATCH 4.4 040/113] b43legacy: Fix -Wcast-function-type

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Message-Id: <20200227132218.137911169@linuxfoundation.org>
Date:   Thu, 27 Feb 2020 14:35:56 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Larry Finger <Larry.Finger@...inger.net>,
        Phong Tran <tranmanphong@...il.com>,
        Kees Cook <keescook@...omium.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.4 040/113] b43legacy: Fix -Wcast-function-type

From: Phong Tran <tranmanphong@...il.com>

[ Upstream commit 475eec112e4267232d10f4afe2f939a241692b6c ]

correct usage prototype of callback in tasklet_init().
Report by https://github.com/KSPP/linux/issues/20

Tested-by: Larry Finger <Larry.Finger@...inger.net>
Signed-off-by: Phong Tran <tranmanphong@...il.com>
Reviewed-by: Kees Cook <keescook@...omium.org>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/wireless/b43legacy/main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/b43legacy/main.c b/drivers/net/wireless/b43legacy/main.c
index afc1fb3e38dfe..bd35a702382fb 100644
--- a/drivers/net/wireless/b43legacy/main.c
+++ b/drivers/net/wireless/b43legacy/main.c
@@ -1304,8 +1304,9 @@ static void handle_irq_ucode_debug(struct b43legacy_wldev *dev)
 }
 
 /* Interrupt handler bottom-half */
-static void b43legacy_interrupt_tasklet(struct b43legacy_wldev *dev)
+static void b43legacy_interrupt_tasklet(unsigned long data)
 {
+	struct b43legacy_wldev *dev = (struct b43legacy_wldev *)data;
 	u32 reason;
 	u32 dma_reason[ARRAY_SIZE(dev->dma_reason)];
 	u32 merged_dma_reason = 0;
@@ -3775,7 +3776,7 @@ static int b43legacy_one_core_attach(struct ssb_device *dev,
 	b43legacy_set_status(wldev, B43legacy_STAT_UNINIT);
 	wldev->bad_frames_preempt = modparam_bad_frames_preempt;
 	tasklet_init(&wldev->isr_tasklet,
-		     (void (*)(unsigned long))b43legacy_interrupt_tasklet,
+		     b43legacy_interrupt_tasklet,
 		     (unsigned long)wldev);
 	if (modparam_pio)
 		wldev->__using_pio = true;
-- 
2.20.1