Re: [RESEND, 1/4] i2c: mpc: get MPC8xxx I2C clock prescaler before using it in calculations
From: Wolfram Sang
Date: Sat Dec 30 2017 - 13:18:21 EST
On Thu, Dec 07, 2017 at 05:20:00PM +0700, Arseny Solokha wrote:
> Obtaining the actual I2C clock prescaler value in mpc_i2c_setup_8xxx() only
> happens when the clock parameter is set to something other than
> MPC_I2C_CLOCK_LEGACY. When the clock parameter is exactly
> MPC_I2C_CLOCK_LEGACY, the prescaler parameter is used in arithmetic
> division as provided by the caller, resulting in a division by zero
> for the majority of processors supported by the module.
> Avoid division by zero by obtaining the actual I2C clock prescaler
> in mpc_i2c_setup_8xxx() unconditionally regardless of the passed clock
> Signed-off-by: Arseny Solokha <asolokha@xxxxxxxxxx>
Applied to for-current, thanks!
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