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3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: y+AOqHz/Fr4Wv6WARPTx5OpmxCv4e5uqLFEJabiTbbrR1ElwhCVGHwKtvTnbWe302JkGhMh87Vr6751PB1Al6iQyQ7nLvwrv/2uEbZZj1hs= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR11MB2056 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220427_001355_063410_6B3D23C2 X-CRM114-Status: GOOD ( 23.57 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org On 4/27/22 08:20, Pratyush Yadav wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe > > On 21/04/22 01:41PM, Tudor.Ambarus@microchip.com wrote: >> On 4/21/22 16:16, Pratyush Yadav wrote: >>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe >>> >>> On 21/04/22 07:18AM, Tudor.Ambarus@microchip.com wrote: >>>> Hi, Pratyush, >>>> >>>> I forgot to remove few checks, would you please remove them when applying? >>>> See below. >>>> >>>> On 4/20/22 13:34, Tudor Ambarus wrote: >>>>> In case spi_nor_match_name() returned NULL, the auto detection was >>>>> issued twice. There's no reason to try to detect the same chip twice, >>>>> do the auto detection only once. >>>>> >>>>> Signed-off-by: Tudor Ambarus >>>>> Reviewed-by: Michael Walle >>>>> --- >>>>> drivers/mtd/spi-nor/core.c | 13 ++++++++----- >>>>> 1 file changed, 8 insertions(+), 5 deletions(-) >>>>> >>>>> diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c >>>>> index b9cc8bbf1f62..b55d922d46dd 100644 >>>>> --- a/drivers/mtd/spi-nor/core.c >>>>> +++ b/drivers/mtd/spi-nor/core.c >>>>> @@ -2896,13 +2896,14 @@ static const struct flash_info *spi_nor_get_flash_info(struct spi_nor *nor, >>>>> { >>>>> const struct flash_info *info = NULL; >>>>> >>>>> - if (name) >>>>> + if (name) { >>>>> info = spi_nor_match_name(nor, name); >>>>> + if (IS_ERR(info)) >>>>> + return info; >>>> >>>> As Michael suggested spi_nor_match_name() returns NULL or valid entry, so this >>>> check is not necessary, let's remove them. >>>> >>>>> + } >>>>> /* Try to auto-detect if chip name wasn't specified or not found */ >>>>> if (!info) >>>>> - info = spi_nor_read_id(nor); >>>>> - if (IS_ERR_OR_NULL(info)) >>>>> - return ERR_PTR(-ENOENT); >>>>> + return spi_nor_read_id(nor); >>>>> >>>>> /* >>>>> * If caller has specified name of flash model that can normally be >>>>> @@ -2994,7 +2995,9 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, >>>>> return -ENOMEM; >>>>> >>>>> info = spi_nor_get_flash_info(nor, name); >>>>> - if (IS_ERR(info)) >>>>> + if (!info) >>>>> + return -ENOENT; >>>> >>>> also according to Michael, this change is not needed as spi_nor_get_flash_info() can't >>>> return NULL. Here we can keep the code as it was. Let me know if you want me to respin. >>> >>> TBH I don't think a NULL check here hurts much since the behaviour might >>> change later, and error paths don't get exercised as often. But I have >> >> I agree, but at the same time we're introducing checks gratuitously. Since >> Michael cared about it, it's fine that we removed it. I don't care too much >> about it. >> >>> made both changes when applying. You can double-check at [0] if you >>> want.> >>> [0] https://github.com/prati0100/linux-0day/commit/67d913746833ee54bf4c661040f3ef13657dffd8 >> >> looks good. >> >> btw: I think this patch >> https://github.com/prati0100/linux-0day/commit/b45bbff85d49529f8daff83c341a292f6c6492ca >> may introduce a regression on some atmel chips. Let me try it please. > > Did you get a chance to try this out? If it works fine, I would like to > apply it. I tried it on a at25df321a. When calling unlock, everything seems fine. However I haven't tried a lock/unlock cycle as lock is not supported and I couldn't allocate more time. Even if there will be regressions we can handle them afterwards, so let's apply it. Cheers, ta ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/