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h=X-UI-Sender-Class:To:Cc:Subject:From:Date; b=iiHzhBB7kX2dmcip3UueM8avfOVgoY0tEuqqVZZKP9mtmz36eDaE27VIdiV0aLvcT lSQqKlvcPRuvA/ZzQDCIVa8zIF2wGCVfKWN7RQli4Zz63+suCrgFG+8Ij1p7NwXYvW dmOKmh4LXbSZZ5ZaABi7N6NGwrZqdQeQzm+lsDhg= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([78.48.21.3]) by smtp.web.de (mrweb106 [213.165.67.124]) with ESMTPSA (Nemesis) id 1MaHSp-1kOZZd2eG5-00WIp5; Tue, 14 Jul 2020 10:48:24 +0200 To: Clark Wang , linux-spi@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Mark Brown Subject: Re: [PATCH 2/5] spi: lpspi: add NULL check when probe device From: Markus Elfring Autocrypt: addr=Markus.Elfring@web.de; prefer-encrypt=mutual; keydata= mQINBFg2+xABEADBJW2hoUoFXVFWTeKbqqif8VjszdMkriilx90WB5c0ddWQX14h6w5bT/A8 +v43YoGpDNyhgA0w9CEhuwfZrE91GocMtjLO67TAc2i2nxMc/FJRDI0OemO4VJ9RwID6ltwt mpVJgXGKkNJ1ey+QOXouzlErVvE2fRh+KXXN1Q7fSmTJlAW9XJYHS3BDHb0uRpymRSX3O+E2 lA87C7R8qAigPDZi6Z7UmwIA83ZMKXQ5stA0lhPyYgQcM7fh7V4ZYhnR0I5/qkUoxKpqaYLp YHBczVP+Zx/zHOM0KQphOMbU7X3c1pmMruoe6ti9uZzqZSLsF+NKXFEPBS665tQr66HJvZvY GMDlntZFAZ6xQvCC1r3MGoxEC1tuEa24vPCC9RZ9wk2sY5Csbva0WwYv3WKRZZBv8eIhGMxs rcpeGShRFyZ/0BYO53wZAPV1pEhGLLxd8eLN/nEWjJE0ejakPC1H/mt5F+yQBJAzz9JzbToU 5jKLu0SugNI18MspJut8AiA1M44CIWrNHXvWsQ+nnBKHDHHYZu7MoXlOmB32ndsfPthR3GSv jN7YD4Ad724H8fhRijmC1+RpuSce7w2JLj5cYj4MlccmNb8YUxsE8brY2WkXQYS8Ivse39MX BE66MQN0r5DQ6oqgoJ4gHIVBUv/ZwgcmUNS5gQkNCFA0dWXznQARAQABtCZNYXJrdXMgRWxm cmluZyA8TWFya3VzLkVsZnJpbmdAd2ViLmRlPokCVAQTAQgAPhYhBHDP0hzibeXjwQ/ITuU9 Figxg9azBQJYNvsQAhsjBQkJZgGABQsJCAcCBhUICQoLAgQWAgMBAh4BAheAAAoJEOU9Figx g9azcyMP/iVihZkZ4VyH3/wlV3nRiXvSreqg+pGPI3c8J6DjP9zvz7QHN35zWM++1yNek7Ar OVXwuKBo18ASlYzZPTFJZwQQdkZSV+atwIzG3US50ZZ4p7VyUuDuQQVVqFlaf6qZOkwHSnk+ CeGxlDz1POSHY17VbJG2CzPuqMfgBtqIU1dODFLpFq4oIAwEOG6fxRa59qbsTLXxyw+PzRaR LIjVOit28raM83Efk07JKow8URb4u1n7k9RGAcnsM5/WMLRbDYjWTx0lJ2WO9zYwPgRykhn2 sOyJVXk9xVESGTwEPbTtfHM+4x0n0gC6GzfTMvwvZ9G6xoM0S4/+lgbaaa9t5tT/PrsvJiob kfqDrPbmSwr2G5mHnSM9M7B+w8odjmQFOwAjfcxoVIHxC4Cl/GAAKsX3KNKTspCHR0Yag78w i8duH/eEd4tB8twcqCi3aCgWoIrhjNS0myusmuA89kAWFFW5z26qNCOefovCx8drdMXQfMYv g5lRk821ZCNBosfRUvcMXoY6lTwHLIDrEfkJQtjxfdTlWQdwr0mM5ye7vd83AManSQwutgpI q+wE8CNY2VN9xAlE7OhcmWXlnAw3MJLW863SXdGlnkA3N+U4BoKQSIToGuXARQ14IMNvfeKX NphLPpUUnUNdfxAHu/S3tPTc/E/oePbHo794dnEm57LuuQINBFg2+xABEADZg/T+4o5qj4cw nd0G5pFy7ACxk28mSrLuva9tyzqPgRZ2bdPiwNXJUvBg1es2u81urekeUvGvnERB/TKekp25 4wU3I2lEhIXj5NVdLc6eU5czZQs4YEZbu1U5iqhhZmKhlLrhLlZv2whLOXRlLwi4jAzXIZAu 76mT813jbczl2dwxFxcT8XRzk9+dwzNTdOg75683uinMgskiiul+dzd6sumdOhRZR7YBT+xC wzfykOgBKnzfFscMwKR0iuHNB+VdEnZw80XGZi4N1ku81DHxmo2HG3icg7CwO1ih2jx8ik0r riIyMhJrTXgR1hF6kQnX7p2mXe6K0s8tQFK0ZZmYpZuGYYsV05OvU8yqrRVL/GYvy4Xgplm3 DuMuC7/A9/BfmxZVEPAS1gW6QQ8vSO4zf60zREKoSNYeiv+tURM2KOEj8tCMZN3k3sNASfoG fMvTvOjT0yzMbJsI1jwLwy5uA2JVdSLoWzBD8awZ2X/eCU9YDZeGuWmxzIHvkuMj8FfX8cK/ 2m437UA877eqmcgiEy/3B7XeHUipOL83gjfq4ETzVmxVswkVvZvR6j2blQVr+MhCZPq83Ota xNB7QptPxJuNRZ49gtT6uQkyGI+2daXqkj/Mot5tKxNKtM1Vbr/3b+AEMA7qLz7QjhgGJcie qp4b0gELjY1Oe9dBAXMiDwARAQABiQI8BBgBCAAmFiEEcM/SHOJt5ePBD8hO5T0WKDGD1rMF Alg2+xACGwwFCQlmAYAACgkQ5T0WKDGD1rOYSw/+P6fYSZjTJDAl9XNfXRjRRyJSfaw6N1pA Ahuu0MIa3djFRuFCrAHUaaFZf5V2iW5xhGnrhDwE1Ksf7tlstSne/G0a+Ef7vhUyeTn6U/0m +/BrsCsBUXhqeNuraGUtaleatQijXfuemUwgB+mE3B0SobE601XLo6MYIhPh8MG32MKO5kOY hB5jzyor7WoN3ETVNQoGgMzPVWIRElwpcXr+yGoTLAOpG7nkAUBBj9n9TPpSdt/npfok9ZfL /Q+ranrxb2Cy4tvOPxeVfR58XveX85ICrW9VHPVq9sJf/a24bMm6+qEg1V/G7u/AM3fM8U2m tdrTqOrfxklZ7beppGKzC1/WLrcr072vrdiN0icyOHQlfWmaPv0pUnW3AwtiMYngT96BevfA qlwaymjPTvH+cTXScnbydfOQW8220JQwykUe+sHRZfAF5TS2YCkQvsyf7vIpSqo/ttDk4+xc Z/wsLiWTgKlih2QYULvW61XU+mWsK8+ZlYUrRMpkauN4CJ5yTpvp+Orcz5KixHQmc5tbkLWf x0n1QFc1xxJhbzN+r9djSGGN/5IBDfUqSANC8cWzHpWaHmSuU3JSAMB/N+yQjIad2ztTckZY pwT6oxng29LzZspTYUEzMz3wK2jQHw+U66qBFk8whA7B2uAU1QdGyPgahLYSOa4XAEGb6wbI FEE= Message-ID: <40ba9761-3f51-3f7f-5026-eed613dbf6dc@web.de> Date: Tue, 14 Jul 2020 10:48:18 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:JOILYCpiV6lAo9XxA9m6+Qu3qD7SYEsgNVYI9NnR6/AoqLb+2I0 tziIYE5bNbqtMiX5XpdQ9XHypE4m07B6V5ncDfUPCXGS0t3H/Nic0T2DAx9NYSglXiGwa5Q dkpzzYrCOiqNdOykO0i0Vv1joI8limKx/PlIY1U4LQvclgC+83fu9BO/7g12lxhZ3OonknC OoYbQUOr/ifpPVLkKoSAQ== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:Tyr5XWVW7aw=:N4bkXfOuQs3xZU57hnb0hL bOXjy61lpqb48Y8cqcfHDWdpb15vPQeRMMdYh66MLznh/6+/eSIGodfN8XChJJ1jb6JJksz0I HoIc09zrR+fwh3L8M/6Gj40qR1+EWyjBkc8t++Eqz2WFWXngxqEu+HvYib9BXoRuN13wLfztE V9zFGpH+l/aG0B/iFLDSkGfzjY4mpFhF91FpYv/0Y1SBGmdFGF3hKfk6FPqPc2HZ3GnfPVh3J GWPD2mSUtJqgbiMw2ZEAD/L5PirY+9aIIvJaO7dKusJHQYGthubO4Mg9oKwXpZBMnIgyV375x otMuFw3meNouuXYnRMwiKLRfKMcJ4uit50w1cohqTIlhd7i8R/9w00b728tLnb47hDz5sDmzz RQtNSwtmn2jJzqOYSS4RefL8RbWgDBeqTvt1UAk4s5R02wzqB0w/Ewr4IyUpogIhajxjehriz XmNtqovG6S1sVCgImYOHL/F7wzaB/YPDT6vZZ4Zp7PNli+Hy8HAc3/aaON+45n1GkUh2B2npb 9M9ku1o95ihtxy42SYCF8c5FXnV9/lggg1D6xpcItfBclLoLA86gEs4WZvjb0hF/55orRBGBv YDWspUQw/fYbjNdTboSdWHKfBr0LLIdyBV3E5hxwTFCZuo7EqrrsUzsxF2ULTIbBANbKSlI1O SyLk0dk7UbYIdIjS7f5E/SK++ovie3KDJN0NlcchDT1YBcPzguctt7MxG1eocdRPxbQ3fquAC Gpv/Z3X97QHX44vzteV7u4CTlEyPXS3ynlH7bNaDMF2jG8FNQvwRohEVaGthUMtn4aZ/P0BK+ MvLjuCCER3wnntt+4brLXophN4/dVDh9eGvTmMrkxq4h7YuMMS4Sw30n57GyCTyQFnI2nWQfv eVj75rhhVBQE4eZ7gzjeGstgGHFmz2lwNbl0dwRL3e0skSDgRevDwA3gi7S6F5uyghIQ21sSE jLK5UBQsBiU/bpl9voch7+Bf/GezwtP/MsBPqB98SEmfyxs8lVGq8VWCI7jR8Mzec4ofaug35 gbzOWO0bp2DMLWxES5qtE7mOxC2VooP9jzmuS3wq0uPcXcvyuAnkqVeRzIKG/nPmYXTC5k6sq YyHBUjiMMUL/1tUaFmTcFGEILvjiZyvLqvLtpc9TlZDE0B0kFjb5wA1dMbNkGAXxMMx5YQzQF YMpsg+1hx4JCOuN9vhQj0+/p1ms0AA2g4dACKehUj/N135rCx5DTP/6NnGeBBOSy//tpDtvZZ YJbB6vxuNiL1PPWbDr+2Wrke21lXMES3bgjGHEQ== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org =E2=80=A6 > +++ b/drivers/spi/spi-fsl-lpspi.c > @@ -841,6 +841,11 @@ static int fsl_lpspi_probe(struct platform_device *= pdev) > u32 temp; > bool is_slave; > > + if (!np && !lpspi_platform_info) { > + dev_err(&pdev->dev, "can't get the platform data\n"); > + return -EINVAL; > + } =E2=80=A6 How do you think about to combine these null pointer checks by the logical operator =E2=80=9Cor=E2=80=9D instead of =E2=80=9Cand=E2=80=9D? Regards, Markus