linux-kernel - [PATCH 3.19.y-ckt 100/196] ARM: 8519/1: ICST: try other dividends than 1

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Message-Id: <1457483454-30115-101-git-send-email-kamal@canonical.com>
Date:	Tue,  8 Mar 2016 16:29:18 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Linus Walleij <linus.walleij@...aro.org>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 100/196] ARM: 8519/1: ICST: try other dividends than 1

3.19.8-ckt16 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Linus Walleij <linus.walleij@...aro.org>

commit e972c37459c813190461dabfeaac228e00aae259 upstream.

Since the dawn of time the ICST code has only supported divide
by one or hang in an eternal loop. Luckily we were always dividing
by one because the reference frequency for the systems using
the ICSTs is 24MHz and the [min,max] values for the PLL input
if [10,320] MHz for ICST307 and [6,200] for ICST525, so the loop
will always terminate immediately without assigning any divisor
for the reference frequency.

But for the code to make sense, let's insert the missing i++

Reported-by: David Binderman <dcb314@...mail.com>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 arch/arm/common/icst.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/common/icst.c b/arch/arm/common/icst.c
index d3c0e69..d7ed252 100644
--- a/arch/arm/common/icst.c
+++ b/arch/arm/common/icst.c
@@ -62,6 +62,7 @@ icst_hz_to_vco(const struct icst_params *p, unsigned long freq)
 
 		if (f > p->vco_min && f <= p->vco_max)
 			break;
+		i++;
 	} while (i < 8);
 
 	if (i >= 8)
-- 
2.7.0