Techwizz/kernel-fxtec-pro1x
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i2c-pnx: Limit maximum divider to 1023

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Limit maximum divider to 0x3ff to divider computations. On high I2C
parent clock rates, the divider can exceed 0x3ff. This will help
prevent some very odd clock rates.

Signed-off-by: Kevin Wells <wellsk40@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Kevin Wells 2010-03-16 15:55:36 -07:00 committed by Ben Dooks
parent 7c6bd2010f
commit be80dbaa3e
1 changed files with 2 additions and 0 deletions
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2
drivers/i2c/busses/i2c-pnx.c
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@ -633,6 +633,8 @@ static int __devinit i2c_pnx_probe(struct platform_device *pdev)
*/
tmp = ((freq / 1000) / I2C_PNX_SPEED_KHZ) / 2 - 2;
if (tmp > 0x3FF)
tmp = 0x3FF;
iowrite32(tmp, I2C_REG_CKH(alg_data));
iowrite32(tmp, I2C_REG_CKL(alg_data));