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Thu, 29 Aug 2019 07:10:33 +0000 From: To: , , , , , , CC: Subject: [PATCH 2/2] mtd: spi-nor: enable the debugfs for the partname and partid Thread-Topic: [PATCH 2/2] mtd: spi-nor: enable the debugfs for the partname and partid Thread-Index: AQHVXjjZ1JUC2tOYnkmU6+Gr1cjiGQ== Date: Thu, 29 Aug 2019 07:10:33 +0000 Message-ID: <20190829071019.2495-3-tudor.ambarus@microchip.com> References: <20190829071019.2495-1-tudor.ambarus@microchip.com> In-Reply-To: <20190829071019.2495-1-tudor.ambarus@microchip.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: VI1PR06CA0165.eurprd06.prod.outlook.com (2603:10a6:803:c8::22) To MN2PR11MB4448.namprd11.prod.outlook.com (2603:10b6:208:193::29) x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.9.5 x-originating-ip: [94.177.32.156] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: c3300f88-e05e-42c8-6450-08d72c4ffb6a x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(5600166)(711020)(4605104)(1401327)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7193020);SRVR:MN2PR11MB3726; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: c3300f88-e05e-42c8-6450-08d72c4ffb6a X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Aug 2019 07:10:33.2564 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: NrxfK7ndSmuhw+osgqKICjiutx6yT/KcXlUcomWvxPgYVLYCypBEikgW51KopiV7JaHeoapEwSLQa3o25AnG7L8NOXNIb3tBsM233u3Br1A= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR11MB3726 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Zhuohao Lee This patch adds spi_nor_debugfs_init() for the debugfs initialization. With this patch, we can read the partname and partid through the debugfs. The output of new debugfs nodes on my device are: cat /sys/kernel/debug/mtd/mtd0/partid spi-nor:ef6017 cat /sys/kernel/debug/mtd/mtd0/partname w25q64dw Signed-off-by: Zhuohao Lee Reviewed-by: Boris Brezillon Signed-off-by: Tudor Ambarus --- drivers/mtd/spi-nor/spi-nor.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 79c8f1dd8c6b..6a2fff0598af 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -4767,6 +4767,16 @@ static int spi_nor_set_addr_width(struct spi_nor *no= r) return 0; } =20 +static void spi_nor_debugfs_init(struct spi_nor *nor, + const struct flash_info *info) +{ + struct mtd_info *mtd =3D &nor->mtd; + + mtd->dbg.partname =3D info->name; + mtd->dbg.partid =3D devm_kasprintf(nor->dev, GFP_KERNEL, "spi-nor:%*phN", + info->id_len, info->id); +} + static const struct flash_info *spi_nor_get_flash_info(struct spi_nor *nor= , const char *name) { @@ -4847,6 +4857,8 @@ int spi_nor_scan(struct spi_nor *nor, const char *nam= e, =20 nor->info =3D info; =20 + spi_nor_debugfs_init(nor, info); + mutex_init(&nor->lock); =20 /* --=20 2.9.5