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Date: Fri, 21 Oct 2022 17:58:40 +0800 From: ChiYuan Huang <u0084500@...il.com> To: Andy Shevchenko <andy.shevchenko@...il.com> Cc: lee@...nel.org, matthias.bgg@...il.com, chiaen_wu@...htek.com, cy_huang@...htek.com, linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v2] mfd: mt6370: Add the out-of-bound check to prevent the null pointer Andy Shevchenko <andy.shevchenko@...il.com> 於 2022年10月21日 週五 下午5:14寫道: > > On Fri, Oct 21, 2022 at 12:02 PM ChiYuan Huang <u0084500@...il.com> wrote: > > Andy Shevchenko <andy.shevchenko@...il.com> 於 2022年10月21日 週五 下午4:34寫道: > > > On Fri, Oct 21, 2022 at 5:17 AM cy_huang <u0084500@...il.com> wrote: > > > > It looks like you randomly cut the trace. > > > It's not what I meant and documentation suggests. > > > > > I checked the submitting-patch.rst. > > To satisfy the requirement for 70-75 chars per line, I only keep the > > important log. > > > > May I ask what you mean for the 'trim'? > > Is it 'Still keep 70-75 per line and cut the characters that's over > > the limit to the next line"? > > > > https://www.kernel.org/doc/html/latest/process/submitting-patches.html#backtraces-in-commit-messages > > Have you had a chance to read this section of the document? > OK, get it. Is the below text enough to express this problem? Ex. Testing as below (mt6370 register range from 0 to 0x1ff) rg_bound_show() regmap_raw_read(regmap, 0x200, &val, sizeof(val)); pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : i2c_smbus_xfer+0x58/0x120 lr : i2c_smbus_read_i2c_block_data+0x74/0xc0 Call trace: i2c_smbus_xfer+0x58/0x120 i2c_smbus_read_i2c_block_data+0x74/0xc0 mt6370_regmap_read+0x40/0x60 _regmap_raw_read+0xe4/0x278 regmap_raw_read+0xec/0x240 rg_bound_show+0xb0/0x120 > -- > With Best Regards, > Andy Shevchenko
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