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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190628_013245_588303_19C64FF7 X-CRM114-Status: GOOD ( 15.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alexandre.torgue@st.com, netdev@vger.kernel.org, kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, joabreu@synopsys.com, mcoquelin.stm32@gmail.com, peppe.cavallaro@st.com, davem@davemloft.net, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 28/06/2019 05:15, Martin Blumenstingl wrote: > On Tue, Jun 25, 2019 at 9:58 AM Colin Ian King wrote: >> >> On 25/06/2019 05:44, Martin Blumenstingl wrote: >>> Hi Colin, >>> >>> On Thu, Jun 20, 2019 at 3:34 AM Martin Blumenstingl >>> wrote: >>>> >>>> Hi Colin, >>>> >>>> On Wed, Jun 19, 2019 at 8:55 AM Colin Ian King wrote: >>>>> >>>>> On 19/06/2019 06:13, Martin Blumenstingl wrote: >>>>>> Hi Colin, >>>>>> >>>>>>> Currently the call to device_property_read_u32_array is not error checked >>>>>>> leading to potential garbage values in the delays array that are then used >>>>>>> in msleep delays. Add a sanity check to the property fetching. >>>>>>> >>>>>>> Addresses-Coverity: ("Uninitialized scalar variable") >>>>>>> Signed-off-by: Colin Ian King >>>>>> I have also sent a patch [0] to fix initialize the array. >>>>>> can you please look at my patch so we can work out which one to use? >>>>>> >>>>>> my concern is that the "snps,reset-delays-us" property is optional, >>>>>> the current dt-bindings documentation states that it's a required >>>>>> property. in reality it isn't, there are boards (two examples are >>>>>> mentioned in my patch: [0]) without it. >>>>>> >>>>>> so I believe that the resulting behavior has to be: >>>>>> 1. don't delay if this property is missing (instead of delaying for >>>>>> ms) >>>>>> 2. don't error out if this property is missing >>>>>> >>>>>> your patch covers #1, can you please check whether #2 is also covered? >>>>>> I tested case #2 when submitting my patch and it worked fine (even >>>>>> though I could not reproduce the garbage values which are being read >>>>>> on some boards) >>> in the meantime I have tested your patch. >>> when I don't set the "snps,reset-delays-us" property then I get the >>> following error: >>> invalid property snps,reset-delays-us >>> >>> my patch has landed in the meantime: [0] >>> how should we proceed with your patch? Your fix is good, so I think we should just drop/forget about my fix. Colin >> >> I'm out of the office today. I'll get back to you on this tomorrow. > gentle ping > (I will be away for the weekend but I can reply on Monday) > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel