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Mon, 21 Oct 2019 05:40:29 -0700 (PDT) Date: Mon, 21 Oct 2019 13:40:27 +0100 From: Lee Jones To: Daniel Thompson Subject: Re: [PATCH v2 7/9] mfd: mfd-core: Protect against NULL call-back function pointer Message-ID: <20191021124027.GG4365@dell> References: <20191021105822.20271-1-lee.jones@linaro.org> <20191021105822.20271-8-lee.jones@linaro.org> <20191021123235.royyfp4mxrvsgioh@holly.lan> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20191021123235.royyfp4mxrvsgioh@holly.lan> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191021_054031_023263_DF911131 X-CRM114-Status: GOOD ( 17.19 ) 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: baohua@kernel.org, stephan@gerhold.net, arnd@arndb.de, linus.walleij@linaro.org, linux-kernel@vger.kernel.org, broonie@kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gTW9uLCAyMSBPY3QgMjAxOSwgRGFuaWVsIFRob21wc29uIHdyb3RlOgoKPiBPbiBNb24sIE9j dCAyMSwgMjAxOSBhdCAxMTo1ODoyMEFNICswMTAwLCBMZWUgSm9uZXMgd3JvdGU6Cj4gPiBJZiBh IGNoaWxkIGRldmljZSBjYWxscyBtZmRfY2VsbF97ZW4sZGlzfWFibGUoKSB3aXRob3V0IGFuIGFw cHJvcHJpYXRlCj4gPiBjYWxsLWJhY2sgYmVpbmcgc2V0LCB3ZSBhcmUgbGlrZWx5IHRvIGVuY291 bnRlciBhIHBhbmljLiAgQXZvaWQgdGhpcwo+ID4gYnkgYWRkaW5nIHN1aXRhYmxlIGNoZWNraW5n Lgo+ID4gCj4gPiBTaWduZWQtb2ZmLWJ5OiBMZWUgSm9uZXMgPGxlZS5qb25lc0BsaW5hcm8ub3Jn Pgo+ID4gLS0tCj4gPiAgZHJpdmVycy9tZmQvbWZkLWNvcmUuYyB8IDEwICsrKysrKysrKysKPiA+ ICAxIGZpbGUgY2hhbmdlZCwgMTAgaW5zZXJ0aW9ucygrKQo+ID4gCj4gPiBkaWZmIC0tZ2l0IGEv ZHJpdmVycy9tZmQvbWZkLWNvcmUuYyBiL2RyaXZlcnMvbWZkL21mZC1jb3JlLmMKPiA+IGluZGV4 IDgxMjY2NjViYjJkOC4uOTBiNDNiNDRhMTVhIDEwMDY0NAo+ID4gLS0tIGEvZHJpdmVycy9tZmQv bWZkLWNvcmUuYwo+ID4gKysrIGIvZHJpdmVycy9tZmQvbWZkLWNvcmUuYwo+ID4gQEAgLTI4LDYg KzI4LDExIEBAIGludCBtZmRfY2VsbF9lbmFibGUoc3RydWN0IHBsYXRmb3JtX2RldmljZSAqcGRl dikKPiA+ICAJY29uc3Qgc3RydWN0IG1mZF9jZWxsICpjZWxsID0gbWZkX2dldF9jZWxsKHBkZXYp Owo+ID4gIAlpbnQgZXJyID0gMDsKPiA+ICAKPiA+ICsJaWYgKCFjZWxsLT5lbmFibGUpIHsKPiA+ ICsJCWRldl9kYmcoJnBkZXYtPmRldiwgIk5vIC5lbmFibGUoKSBjYWxsLWJhY2sgcmVnaXN0ZXJl ZFxuIik7Cj4gPiArCQlyZXR1cm4gMDsKPiA+ICsJfQo+ID4gKwo+ID4gIAkvKiBvbmx5IGNhbGwg ZW5hYmxlIGhvb2sgaWYgdGhlIGNlbGwgd2Fzbid0IHByZXZpb3VzbHkgZW5hYmxlZCAqLwo+ID4g IAlpZiAoYXRvbWljX2luY19yZXR1cm4oY2VsbC0+dXNhZ2VfY291bnQpID09IDEpCj4gPiAgCQll cnIgPSBjZWxsLT5lbmFibGUocGRldik7Cj4gPiBAQCAtNDUsNiArNTAsMTEgQEAgaW50IG1mZF9j ZWxsX2Rpc2FibGUoc3RydWN0IHBsYXRmb3JtX2RldmljZSAqcGRldikKPiA+ICAJY29uc3Qgc3Ry dWN0IG1mZF9jZWxsICpjZWxsID0gbWZkX2dldF9jZWxsKHBkZXYpOwo+ID4gIAlpbnQgZXJyID0g MDsKPiA+ICAKPiA+ICsJaWYgKCFjZWxsLT5lbmFibGUpIHsKPiAKPiBPb3BzLgo+IAo+IENhbmNl bCB0aGUgUi1COiA7LSkuIFNob3VsZG4ndCB0aGlzIGJlICFjZWxsLT5kaXNhYmxlKCkgPwoKWWVz LiBMb29rcyBsaWtlIGEgQy9QIGVycm9yLgoKV2lsbCBmaXggYW5kIGFkZCB5b3VyIFItYi4KCi0t IApMZWUgSm9uZXMgW+adjueQvOaWr10KTGluYXJvIFNlcnZpY2VzIFRlY2huaWNhbCBMZWFkCkxp bmFyby5vcmcg4pSCIE9wZW4gc291cmNlIHNvZnR3YXJlIGZvciBBUk0gU29DcwpGb2xsb3cgTGlu YXJvOiBGYWNlYm9vayB8IFR3aXR0ZXIgfCBCbG9nCgpfX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51 eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5v cmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==