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From: Greg KH <gregkh@suse.de>
To: linux-kernel@vger.kernel.org, stable@kernel.org
Cc: Justin Forbes <jmforbes@linuxtx.org>,
	Zwane Mwaikambo <zwane@arm.linux.org.uk>,
	"Theodore Ts'o" <tytso@mit.edu>,
	Randy Dunlap <rdunlap@xenotime.net>,
	Dave Jones <davej@redhat.com>,
	Chuck Wolber <chuckw@quantumlinux.com>,
	Chris Wedgwood <reviews@ml.cw.f00f.org>,
	Michael Krufky <mkrufky@linuxtv.org>,
	torvalds@osdl.org, akpm@osdl.org, alan@lxorguk.ukuu.org.uk,
	v4l-dvb maintainer list <v4l-dvb-maintainer@linuxtv.org>,
	Yeasah Pell <yeasah@schwide.net>,
	Steven Toth <stoth@hauppauge.com>,
	Greg Kroah-Hartman <gregkh@suse.de>
Subject: [patch 11/19] Video: cx24123: fix PLL divisor setup
Date: Tue, 10 Oct 2006 10:15:15 -0700	[thread overview]
Message-ID: <20061010171515.GL6339@kroah.com> (raw)
In-Reply-To: <20061010171350.GA6339@kroah.com>

[-- Attachment #1: video-cx24123-fix-pll-divisor-setup.patch --]
[-- Type: text/plain, Size: 1336 bytes --]

-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Yeasah Pell <yeasah@schwide.net>

The cx24109 datasheet says: "NOTE: if A=0, then N=N+1"

The current code is the result of a misinterpretation of the datasheet to
mean exactly the opposite of the requirement -- The actual value of N is 1 greater than the value written when A is 0, so 1 needs to be *subtracted*
from it to compensate.

Signed-off-by: Yeasah Pell <yeasah@schwide.net>
Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/media/dvb/frontends/cx24123.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- linux-2.6.17.13.orig/drivers/media/dvb/frontends/cx24123.c
+++ linux-2.6.17.13/drivers/media/dvb/frontends/cx24123.c
@@ -579,8 +579,8 @@ static int cx24123_pll_calculate(struct 
 	ndiv = ( ((p->frequency * vco_div * 10) / (2 * XTAL / 1000)) / 32) & 0x1ff;
 	adiv = ( ((p->frequency * vco_div * 10) / (2 * XTAL / 1000)) % 32) & 0x1f;
 
-	if (adiv == 0)
-		ndiv++;
+	if (adiv == 0 && ndiv > 0)
+		ndiv--;
 
 	/* control bits 11, refdiv 11, charge pump polarity 1, charge pump current, ndiv, adiv */
 	state->pllarg = (3 << 19) | (3 << 17) | (1 << 16) | (pump << 14) | (ndiv << 5) | adiv;

--

  parent reply	other threads:[~2006-10-10 17:20 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20061010165621.394703368@quad.kroah.org>
2006-10-10 17:13 ` [patch 00/19] 2.6.17-stable review Greg KH
2006-10-10 17:14   ` [patch 01/19] dvb-core: Proper handling ULE SNDU length of 0 (CVE-2006-4623) Greg KH
2006-10-10 17:14   ` [patch 02/19] NFS: Fix a potential deadlock in nfs_release_page Greg KH
2006-10-10 17:14   ` [patch 03/19] SUNRPC: avoid choosing an IPMI port for RPC traffic Greg KH
2006-10-10 18:59     ` Jan Engelhardt
2006-10-11 23:45       ` Trond Myklebust
2006-10-12  1:12         ` Alan Cox
2006-10-12  1:35           ` Trond Myklebust
2006-10-12  1:53             ` Matt Domsch
2006-10-12  2:04               ` Trond Myklebust
2006-10-12 10:16                 ` Alan Cox
2006-10-12 10:15               ` Alan Cox
2006-10-12 15:15                 ` Trond Myklebust
2006-10-12  7:58             ` Jan Engelhardt
2006-10-12  8:35               ` Bernd Petrovitsch
2006-10-12 12:28                 ` Jan Engelhardt
2006-10-12 15:01               ` Trond Myklebust
2006-10-12 15:49                 ` Jan Engelhardt
2006-10-10 17:14   ` [patch 04/19] LOCKD: Fix a deadlock in nlm_traverse_files() Greg KH
2006-10-10 17:14   ` [patch 05/19] NFS: More page cache revalidation fixups Greg KH
2006-10-10 17:14   ` [patch 06/19] Backport: Old IDE, fix SATA detection for cabling Greg KH
2006-10-10 17:14   ` [patch 07/19] invalidate_complete_page() race fix Greg KH
2006-10-10 18:12     ` Hugh Dickins
2006-10-10 19:14       ` [stable] " Greg KH
2006-10-10 19:30         ` Andrew Morton
2006-10-10 17:14   ` [patch 08/19] ext3 sequential read regression fix Greg KH
2006-10-10 17:14   ` [patch 09/19] sysfs: remove duplicated dput in sysfs_update_file Greg KH
2006-10-10 17:15   ` [patch 10/19] Video: Fix msp343xG handling regression Greg KH
2006-10-10 17:15   ` Greg KH [this message]
2006-10-10 17:15   ` [patch 12/19] SPARC64: Fix serious bug in sched_clock() on sparc64 Greg KH
2006-10-10 17:15   ` [patch 13/19] Fix sparc64 ramdisk handling Greg KH
2006-10-10 17:15   ` [patch 14/19] PKT_SCHED: cls_basic: Use unsigned int when generating handle Greg KH
2006-10-10 17:15   ` [patch 15/19] xirc2ps_cs: Cannot reset card in atomic context Greg KH
2006-10-10 17:15   ` [patch 16/19] Add PIIX4 APCI quirk for the 440MX chipset too Greg KH
2006-10-10 17:15   ` [patch 17/19] MMC: Always use a sector size of 512 bytes Greg KH
2006-10-10 17:15   ` [patch 18/19] ahci: do not fail softreset if PHY reports no device Greg KH
2006-10-10 17:15   ` [patch 19/19] Input: logips2pp - fix button mapping for MX300 Greg KH
2006-10-10 17:59   ` [stable] [patch 00/19] 2.6.17-stable review Greg KH

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