From: linux@prisktech.co.nz (Tony Prisk)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/3] clk: vt8500: Fix error in PLL calculations on non-exact match.
Date: Thu, 27 Dec 2012 13:14:29 +1300 [thread overview]
Message-ID: <1356567272-3420-2-git-send-email-linux@prisktech.co.nz> (raw)
In-Reply-To: <1356567272-3420-1-git-send-email-linux@prisktech.co.nz>
When a PLL frequency calculation is performed and a non-exact match
is found the wrong multiplier and divisors are returned.
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
---
drivers/clk/clk-vt8500.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/clk/clk-vt8500.c b/drivers/clk/clk-vt8500.c
index fe25570..0cb26be 100644
--- a/drivers/clk/clk-vt8500.c
+++ b/drivers/clk/clk-vt8500.c
@@ -361,9 +361,9 @@ static void wm8650_find_pll_bits(unsigned long rate, unsigned long parent_rate,
/* if we got here, it wasn't an exact match */
pr_warn("%s: requested rate %lu, found rate %lu\n", __func__, rate,
rate - best_err);
- *multiplier = mul;
- *divisor1 = div1;
- *divisor2 = div2;
+ *multiplier = best_mul;
+ *divisor1 = best_div1;
+ *divisor2 = best_div2;
}
static int vtwm_pll_set_rate(struct clk_hw *hw, unsigned long rate,
--
1.7.9.5
next prev parent reply other threads:[~2012-12-27 0:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-27 0:14 [PATCH 0/3] clk fixes for 3.8 Tony Prisk
2012-12-27 0:14 ` Tony Prisk [this message]
2012-12-27 0:14 ` [PATCH 2/3] clk: vt8500: Fix device clock divisor calculations Tony Prisk
2012-12-27 0:14 ` [PATCH 3/3] clk: vt8500: Fix division-by-0 when requested rate=0 Tony Prisk
2013-01-14 23:06 ` [PATCH 0/3] clk fixes for 3.8 Mike Turquette
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