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Date:   Wed, 14 Dec 2022 13:44:46 +0200
From:   Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To:     Hanna Hawa <hhhawa@amazon.com>
Cc:     jarkko.nikula@linux.intel.com, mika.westerberg@linux.intel.com,
        jsd@semihalf.com, linux-i2c@vger.kernel.org,
        linux-kernel@vger.kernel.org, dwmw@amazon.co.uk, benh@amazon.com,
        ronenk@amazon.com, talel@amazon.com, jonnyc@amazon.com,
        hanochu@amazon.com, farbere@amazon.com, itamark@amazon.com,
        lareine@amazon.com
Subject: Re: [PATCH 1/1] i2c: designware: use u64 for clock freq to avoid u32
 multiplication overflow
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References: <20221214103418.64431-1-hhhawa@amazon.com>
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On Wed, Dec 14, 2022 at 10:34:18AM +0000, Hanna Hawa wrote:
> From: Lareine Khawaly <lareine@amazon.com>
> 
> In functions i2c_dw_scl_lcnt() and i2c_dw_scl_hcnt() may have overflow
> by depending on the values of the given parameters including the ic_clk.
> For example in our usecase where ic_clk >= 1000000, multiplication of

It's hard to count 0:s, can you use plain words instead (like million, billion)?

> ic_clk * 4700 will result in 32 bit overflow.

> This commit change the ic_clk to be u64 parameter to avoid the overflow.

Read Submitting Patches about imperative mood in the commit messages.

...

Smells like you are missing the Fixes tag.

-- 
With Best Regards,
Andy Shevchenko