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From: <Tudor.Ambarus@microchip.com>
To: <john.garry@huawei.com>, <vigneshr@ti.com>,
	<boris.brezillon@collabora.com>, <marek.vasut@gmail.com>,
	<linux-mtd@lists.infradead.org>, <geert+renesas@glider.be>,
	<jonas@norrbonn.se>
Cc: linux-aspeed@lists.ozlabs.org, andrew@aj.id.au, richard@nod.at,
	linux-kernel@vger.kernel.org, vz@mleia.com,
	linux-mediatek@lists.infradead.org, joel@jms.id.au,
	miquel.raynal@bootlin.com, matthias.bgg@gmail.com,
	computersforpeace@gmail.com, dwmw2@infradead.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 10/22] mtd: spi-nor: Rework write_sr()
Date: Fri, 4 Oct 2019 10:03:40 +0000	[thread overview]
Message-ID: <e5d9b91f-cb86-0b82-5631-af0868ba4796@microchip.com> (raw)
In-Reply-To: <83d62334-bd1c-20b7-3c58-225392c819f8@huawei.com>

Hi, John,

On 10/04/2019 12:39 PM, John Garry wrote:
> External E-Mail
> 
> 
> On 24/09/2019 08:46, Tudor.Ambarus@microchip.com wrote:
>> +}
>> +
>> +/**
>> + * spi_nor_write_sr() - Write the Status Register.
>> + * @nor:    pointer to 'struct spi_nor'.
>> + * @sr:        buffer to write to the Status Register.
>> + * @len:    number of bytes to write to the Status Register.
>> + *
>> + * Return: 0 on success, -errno otherwise.
>>   */
>> -static int write_sr(struct spi_nor *nor, u8 val)
>> +static int spi_nor_write_sr(struct spi_nor *nor, const u8 *sr, size_t len)
>>  {
>> -    nor->bouncebuf[0] = val;
>> +    int ret;
>> +
>> +    ret = spi_nor_write_enable(nor);
>> +    if (ret)
>> +        return ret;
>> +
> 
> Hi Tudor,
> 
>>      if (nor->spimem) {
>>          struct spi_mem_op op =
>>              SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WRSR, 1),
>>                     SPI_MEM_OP_NO_ADDR,
>>                     SPI_MEM_OP_NO_DUMMY,
>> -                   SPI_MEM_OP_DATA_IN(1, nor->bouncebuf, 1));
> 
> This be SPI_MEM_OP_DATA_OUT() in the current mainline code also, right?

In v5.4-rc1 this is defined as SPI_MEM_OP_DATA_IN, so the Mainline code should
fail. This looks like a bug. I didn't noticed it when doing the patch.

> 
> I'm testing my under development driver on top of v5.4-rc1, and flash_lock -u is broken.

It's not clear to me, does flash_lock fail with my patches on top of v5.4-rc1?
Or it fails when testing v5.4-rc1?

Can you test v5.4-rc1 and see if flash_lock works on you flash or not?

Please specify which flash do you use, and which controller.

Thanks for testing this!
ta
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  reply	other threads:[~2019-10-04 10:04 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-24  7:45 [PATCH v2 00/22] mtd: spi-nor: Quad Enable and (un)lock methods Tudor.Ambarus
2019-09-24  7:45 ` [PATCH v2 01/22] mtd: spi-nor: hisi-sfc: Drop nor->erase NULL assignment Tudor.Ambarus
2019-10-10  6:49   ` Boris Brezillon
2019-10-23 21:24   ` Tudor.Ambarus
2019-09-24  7:45 ` [PATCH v2 02/22] mtd: spi-nor: Introduce 'struct spi_nor_controller_ops' Tudor.Ambarus
2019-10-10  6:51   ` Boris Brezillon
2019-10-23 21:24   ` Tudor.Ambarus
2019-09-24  7:45 ` [PATCH v2 03/22] mtd: spi-nor: cadence-quadspi: Fix cqspi_command_read() definition Tudor.Ambarus
2019-10-10  6:54   ` Boris Brezillon
2019-10-23 21:25   ` Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 04/22] mtd: spi-nor: Rename nor->params to nor->flash Tudor.Ambarus
2019-10-10  7:05   ` Boris Brezillon
2019-10-23 21:34     ` Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 05/22] mtd: spi-nor: Rework read_sr() Tudor.Ambarus
2019-10-10  7:13   ` Boris Brezillon
2019-09-24  7:46 ` [PATCH v2 06/22] mtd: spi-nor: Rework read_fsr() Tudor.Ambarus
2019-10-10  7:14   ` Boris Brezillon
2019-09-24  7:46 ` [PATCH v2 07/22] mtd: spi-nor: Rework read_cr() Tudor.Ambarus
2019-10-10  7:16   ` Boris Brezillon
2019-10-10  7:16     ` Boris Brezillon
2019-09-24  7:46 ` [PATCH v2 08/22] mtd: spi-nor: Rework write_enable/disable() Tudor.Ambarus
2019-10-10  7:21   ` Boris Brezillon
2019-10-23 23:39     ` Tudor.Ambarus
2019-10-24  6:04       ` Boris Brezillon
2019-10-24 11:01         ` Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 09/22] mtd: spi-nor: Fix retlen handling in sst_write() Tudor.Ambarus
2019-10-10  7:33   ` Boris Brezillon
2019-10-25  7:34     ` Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 10/22] mtd: spi-nor: Rework write_sr() Tudor.Ambarus
2019-10-04  9:39   ` John Garry
2019-10-04 10:03     ` Tudor.Ambarus [this message]
2019-10-04 10:26       ` John Garry
2019-10-04 10:47         ` [PATCH] mtd: spi-nor: Fix direction of the write_sr() transfer Tudor.Ambarus
2019-10-04 10:48           ` Tudor.Ambarus
2019-10-04 11:31             ` John Garry
2019-10-04 15:17               ` John Garry
2019-10-04 15:50                 ` Tudor.Ambarus
2019-10-04 16:06           ` Vignesh Raghavendra
2019-10-04 16:09           ` Miquel Raynal
2019-09-24  7:46 ` [PATCH v2 11/22] mtd: spi-nor: Rework spi_nor_read/write_sr2() Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 12/22] mtd: spi-nor: Report error in spi_nor_xread_sr() Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 13/22] mtd: spi-nor: Void return type for spi_nor_clear_sr/fsr() Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 14/22] mtd: spi-nor: Drop duplicated new line Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 15/22] mtd: spi-nor: Drop spansion_quad_enable() Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 16/22] mtd: spi-nor: Fix errno on quad_enable methods Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 17/22] mtd: spi-nor: Check all the bits written, not just the BP ones Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 18/22] mtd: spi-nor: Fix clearing of QE bit on lock()/unlock() Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 19/22] mtd: spi-nor: Rework macronix_quad_enable() Tudor.Ambarus
2019-09-24  7:46 ` [PATCH v2 20/22] mtd: spi-nor: Rework spansion(_no)_read_cr_quad_enable() Tudor.Ambarus
2019-09-24  7:47 ` [PATCH v2 21/22] mtd: spi-nor: Update sr2_bit7_quad_enable() Tudor.Ambarus
2019-09-24  7:47 ` [PATCH v2 22/22] mtd: spi-nor: Rework the disabling of block write protection Tudor.Ambarus
2019-09-25 10:11 ` [PATCH v2 00/22] mtd: spi-nor: Quad Enable and (un)lock methods Tudor.Ambarus

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