From: Alexander Strakh <strakh@ispras.ru>
To: Vladimir Shebordaev <vshebordaev@mail.ru>,
Mauro Carvalho Chehab <mchehab@infradead.org>,
linux-media@vger.kernel.org,
Linux Kernlel Mailing List <linux-kernel@vger.kernel.org>
Subject: [BUG] radio-gemtek-pci.c: double mutex_lock
Date: Thu, 8 Oct 2009 18:52:50 +0000 [thread overview]
Message-ID: <200910081852.50816.strakh@ispras.ru> (raw)
KERNEL_VERSION: 2.6.31
DESCRIBE:
In driver ./drivers/media/radio/radio-gemtek-pci.c
mutex_lock is called first time in line 184, then in line 186
gemtek_pci_setfrequency is called.
182 static void gemtek_pci_unmute(struct gemtek_pci *card)
183 {
184 mutex_lock(&card->lock);
185 if (card->mute) {
186 gemtek_pci_setfrequency(card, card->current_frequency);
187 card->mute = false;
188 }
189 mutex_unlock(&card->lock);190 }
In gemtek_pci_setfrequency we call mutex_lock again in line 152
144 static void gemtek_pci_setfrequency(struct gemtek_pci *card, unsigned long
frequency)
145 {
146 int i;
147 u32 value = frequency / 200 + 856;
148 u16 mask = 0x8000;
149 u8 last_byte;
150 u32 port = card->iobase;
151
152 mutex_lock(&card->lock);
Found by : Linux Driver Verification project
next reply other threads:[~2009-10-08 14:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-08 18:52 Alexander Strakh [this message]
2009-10-08 18:47 ` [BUG] radio-gemtek-pci.c: double mutex_lock Jiri Kosina
2009-11-05 16:27 ` Hans Verkuil
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