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From:   Ping-Ke Shih <pkshih@realtek.com>
To:     Sascha Hauer <s.hauer@pengutronix.de>,
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Subject: RE: [PATCH v3 03/11] rtw88: Drop rf_lock
Thread-Topic: [PATCH v3 03/11] rtw88: Drop rf_lock
Thread-Index: AQHY/oIygBK3Wh67DEaTX45BCElsma5PUv2Q
Date:   Fri, 25 Nov 2022 08:29:38 +0000
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> -----Original Message-----
> From: Sascha Hauer <s.hauer@pengutronix.de>
> Sent: Tuesday, November 22, 2022 10:52 PM
> To: linux-wireless@vger.kernel.org
> Cc: Neo Jou <neojou@gmail.com>; Hans Ulli Kroll <linux@ulli-kroll.de>; Ping-Ke Shih <pkshih@realtek.com>;
> Yan-Hsuan Chuang <tony0620emma@gmail.com>; Kalle Valo <kvalo@kernel.org>; netdev@vger.kernel.org;
> linux-kernel@vger.kernel.org; Martin Blumenstingl <martin.blumenstingl@googlemail.com>;
> kernel@pengutronix.de; Johannes Berg <johannes@sipsolutions.net>; Alexander Hochbaum <alex@appudo.com>;
> Da Xue <da@libre.computer>; Bernie Huang <phhuang@realtek.com>; Viktor Petrenko <g0000ga@gmail.com>;
> Sascha Hauer <s.hauer@pengutronix.de>
> Subject: [PATCH v3 03/11] rtw88: Drop rf_lock
> 
> The rtwdev->rf_lock spinlock protects the rf register accesses in
> rtw_read_rf() and rtw_write_rf(). Most callers of these functions hold
> rtwdev->mutex already with the exception of the callsites in the debugfs
> code. The debugfs code doesn't justify an extra lock, so acquire the mutex
> there as well before calling rf register accessors and drop the now
> unnecessary spinlock.
> 
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>

[...]