---------- Forwarded message ----------
Date: Wed, 18 Sep 2019 23:17:29 +0800
From: kbuild test robot <l...@intel.com>
To: kbu...@01.org
Cc: Julia Lawall <julia.law...@lip6.fr>
Subject: Re: [v7 1/2] mtd: rawnand: Add new Cadence NAND driver to MTD subsystem
CC: kbuild-...@01.org
In-Reply-To: <20190918123115.30510-1-pio...@cadence.com>
References: <20190918123115.30510-1-pio...@cadence.com>
TO: Piotr Sroka <pio...@cadence.com>
CC: Kazuhiro Kasai <kasai.kazuh...@socionext.com>, Piotr Sroka <pio...@cadence.com>, Miquel Raynal <miquel.ray...@bootlin.com>, Richard Weinberger <rich...@nod.at>, David Woodhouse
<dw...@infradead.org>, Brian Norris <computersforpe...@gmail.com>, Marek Vasut <marek.va...@gmail.com>, Vignesh Raghavendra <vigne...@ti.com>, Mauro Carvalho Chehab <mchehab+sams...@kernel.org>,
"David S. Miller" <da...@davemloft.net>, Greg Kroah-Hartman <gre...@linuxfoundation.org>, Linus Walleij <linus.wall...@linaro.org>, Nicolas Ferre <nicolas.fe...@microchip.com>, "Paul E.
McKenney" <paul...@linux.ibm.com>, Boris Brezillon <boris.brezil...@collabora.com>, Thomas Gleixner <t...@linutronix.de>, Paul Cercueil <p...@crapouillou.net>, Arnd Bergmann <a...@arndb.de>,
Marcel Ziswiler <marcel.ziswi...@toradex.com>, Liang Yang <liang.y...@amlogic.com>, Anders Roxell <anders.rox...@linaro.org>, linux-kernel@vger.kernel.org, linux-...@lists.infradead.org
Hi Piotr,
I love your patch! Perhaps something to improve:
[auto build test WARNING on linus/master]
[cannot apply to v5.3 next-20190917]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]
url:
https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_0day-2Dci_linux_commits_Piotr-2DSroka_mtd-2Drawnand-2DAdd-2Dnew-2DCadence-2DNAND-2Ddriver-2Dto-2DMTD-2Dsubsystem_20190918-2D204505&d=DwIFaQ&c=aUq983L2pue2FqKFoP6PGHMJQyoJ7kl3s3GZ-_haXqY&r=TGZtNfZu5Cjhu2K8A0Qhsot4HlKpSJ0Xmyc_L8hPwSI&m=mgwNQ1SA26JWmty5PuDLavsJlIOFJvmPqnwJa6yPWMA&s=NawctdULcP90SHk2dQOe0pKiQerhjWFPA6n5lT8EFxY&e=
:::::: branch date: 3 hours ago
:::::: commit date: 3 hours ago
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <l...@intel.com>
Reported-by: Julia Lawall <julia.law...@lip6.fr>
>> drivers/mtd/nand/raw/cadence-nand-controller.c:2644:5-28: WARNING: Unsigned
expression compared with zero: cdns_chip -> corr_str_idx < 0
#
https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_0day-2Dci_linux_commit_3235ae79d58b8d95b44d5d3773f59065f04d4f00&d=DwIFaQ&c=aUq983L2pue2FqKFoP6PGHMJQyoJ7kl3s3GZ-_haXqY&r=TGZtNfZu5Cjhu2K8A0Qhsot4HlKpSJ0Xmyc_L8hPwSI&m=mgwNQ1SA26JWmty5PuDLavsJlIOFJvmPqnwJa6yPWMA&s=Mx7SXvJoMz9s4OjGbntC5eTU-djHxf6cpfehouD_uFI&e=
git remote add linux-review
https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_0day-2Dci_linux&d=DwIFaQ&c=aUq983L2pue2FqKFoP6PGHMJQyoJ7kl3s3GZ-_haXqY&r=TGZtNfZu5Cjhu2K8A0Qhsot4HlKpSJ0Xmyc_L8hPwSI&m=mgwNQ1SA26JWmty5PuDLavsJlIOFJvmPqnwJa6yPWMA&s=aKS20tAkXcvBbq1SBp9yJSghFIfIuFqSNAL_Fq5uCI4&e=
git remote update linux-review
git checkout 3235ae79d58b8d95b44d5d3773f59065f04d4f00
vim +2644 drivers/mtd/nand/raw/cadence-nand-controller.c
3235ae79d58b8d Piotr Sroka 2019-09-18 2584
3235ae79d58b8d Piotr Sroka 2019-09-18 2585 int
cadence_nand_attach_chip(struct nand_chip *chip)
3235ae79d58b8d Piotr Sroka 2019-09-18 2586 {
3235ae79d58b8d Piotr Sroka 2019-09-18 2587 struct cdns_nand_ctrl *cdns_ctrl =
to_cdns_nand_ctrl(chip->controller);
3235ae79d58b8d Piotr Sroka 2019-09-18 2588 struct cdns_nand_chip
*cdns_chip = to_cdns_nand_chip(chip);
3235ae79d58b8d Piotr Sroka 2019-09-18 2589 u32 ecc_size =
cdns_chip->sector_count * chip->ecc.bytes;
3235ae79d58b8d Piotr Sroka 2019-09-18 2590 struct mtd_info *mtd =
nand_to_mtd(chip);
3235ae79d58b8d Piotr Sroka 2019-09-18 2591 u32 max_oob_data_size;
3235ae79d58b8d Piotr Sroka 2019-09-18 2592 int ret;
3235ae79d58b8d Piotr Sroka 2019-09-18 2593
3235ae79d58b8d Piotr Sroka 2019-09-18 2594 if (chip->options &
NAND_BUSWIDTH_16) {
3235ae79d58b8d Piotr Sroka 2019-09-18 2595 ret =
cadence_nand_set_access_width16(cdns_ctrl, true);
3235ae79d58b8d Piotr Sroka 2019-09-18 2596 if (ret)
3235ae79d58b8d Piotr Sroka 2019-09-18 2597 goto free_buf;
3235ae79d58b8d Piotr Sroka 2019-09-18 2598 }
3235ae79d58b8d Piotr Sroka 2019-09-18 2599
3235ae79d58b8d Piotr Sroka 2019-09-18 2600 chip->bbt_options |=
NAND_BBT_USE_FLASH;
3235ae79d58b8d Piotr Sroka 2019-09-18 2601 chip->bbt_options |=
NAND_BBT_NO_OOB;
3235ae79d58b8d Piotr Sroka 2019-09-18 2602 chip->ecc.mode = NAND_ECC_HW;
3235ae79d58b8d Piotr Sroka 2019-09-18 2603
3235ae79d58b8d Piotr Sroka 2019-09-18 2604 chip->options |=
NAND_NO_SUBPAGE_WRITE;
3235ae79d58b8d Piotr Sroka 2019-09-18 2605
3235ae79d58b8d Piotr Sroka 2019-09-18 2606 cdns_chip->bbm_offs =
chip->badblockpos;
3235ae79d58b8d Piotr Sroka 2019-09-18 2607 if (chip->options &
NAND_BUSWIDTH_16) {
3235ae79d58b8d Piotr Sroka 2019-09-18 2608 cdns_chip->bbm_offs &=
~0x01;
3235ae79d58b8d Piotr Sroka 2019-09-18 2609 cdns_chip->bbm_len = 2;
3235ae79d58b8d Piotr Sroka 2019-09-18 2610 } else {
3235ae79d58b8d Piotr Sroka 2019-09-18 2611 cdns_chip->bbm_len = 1;
3235ae79d58b8d Piotr Sroka 2019-09-18 2612 }
3235ae79d58b8d Piotr Sroka 2019-09-18 2613
3235ae79d58b8d Piotr Sroka 2019-09-18 2614 ret = nand_ecc_choose_conf(chip,
3235ae79d58b8d Piotr Sroka 2019-09-18 2615
&cdns_ctrl->ecc_caps,
3235ae79d58b8d Piotr Sroka 2019-09-18 2616
mtd->oobsize - cdns_chip->bbm_len);
3235ae79d58b8d Piotr Sroka 2019-09-18 2617 if (ret) {
3235ae79d58b8d Piotr Sroka 2019-09-18 2618 dev_err(cdns_ctrl->dev, "ECC
configuration failed\n");
3235ae79d58b8d Piotr Sroka 2019-09-18 2619 goto free_buf;
3235ae79d58b8d Piotr Sroka 2019-09-18 2620 }
3235ae79d58b8d Piotr Sroka 2019-09-18 2621
3235ae79d58b8d Piotr Sroka 2019-09-18 2622 dev_dbg(cdns_ctrl->dev,
3235ae79d58b8d Piotr Sroka 2019-09-18 2623 "chosen ECC settings:
step=%d, strength=%d, bytes=%d\n",
3235ae79d58b8d Piotr Sroka 2019-09-18 2624 chip->ecc.size,
chip->ecc.strength, chip->ecc.bytes);
3235ae79d58b8d Piotr Sroka 2019-09-18 2625
3235ae79d58b8d Piotr Sroka 2019-09-18 2626 /* Error correction
configuration. */
3235ae79d58b8d Piotr Sroka 2019-09-18 2627 cdns_chip->sector_size =
chip->ecc.size;
3235ae79d58b8d Piotr Sroka 2019-09-18 2628 cdns_chip->sector_count =
mtd->writesize / cdns_chip->sector_size;
3235ae79d58b8d Piotr Sroka 2019-09-18 2629
3235ae79d58b8d Piotr Sroka 2019-09-18 2630 cdns_chip->avail_oob_size =
mtd->oobsize - ecc_size;
3235ae79d58b8d Piotr Sroka 2019-09-18 2631
3235ae79d58b8d Piotr Sroka 2019-09-18 2632 max_oob_data_size =
MAX_OOB_SIZE_PER_SECTOR;
3235ae79d58b8d Piotr Sroka 2019-09-18 2633
3235ae79d58b8d Piotr Sroka 2019-09-18 2634 if (cdns_chip->avail_oob_size >
max_oob_data_size)
3235ae79d58b8d Piotr Sroka 2019-09-18 2635
cdns_chip->avail_oob_size = max_oob_data_size;
3235ae79d58b8d Piotr Sroka 2019-09-18 2636
3235ae79d58b8d Piotr Sroka 2019-09-18 2637 if ((cdns_chip->avail_oob_size +
cdns_chip->bbm_len + ecc_size)
3235ae79d58b8d Piotr Sroka 2019-09-18 2638 > mtd->oobsize)
3235ae79d58b8d Piotr Sroka 2019-09-18 2639
cdns_chip->avail_oob_size -= 4;
3235ae79d58b8d Piotr Sroka 2019-09-18 2640
3235ae79d58b8d Piotr Sroka 2019-09-18 2641 cdns_chip->corr_str_idx =
3235ae79d58b8d Piotr Sroka 2019-09-18 2642
cadence_nand_get_ecc_strength_idx(cdns_ctrl,
3235ae79d58b8d Piotr Sroka 2019-09-18 2643
chip->ecc.strength);
3235ae79d58b8d Piotr Sroka 2019-09-18 @2644 if (cdns_chip->corr_str_idx < 0)
3235ae79d58b8d Piotr Sroka 2019-09-18 2645 return -EINVAL;
3235ae79d58b8d Piotr Sroka 2019-09-18 2646
3235ae79d58b8d Piotr Sroka 2019-09-18 2647 if
(cadence_nand_wait_for_value(cdns_ctrl, CTRL_STATUS,
3235ae79d58b8d Piotr Sroka 2019-09-18 2648
1000000,
3235ae79d58b8d Piotr Sroka 2019-09-18 2649
CTRL_STATUS_CTRL_BUSY, true))
3235ae79d58b8d Piotr Sroka 2019-09-18 2650 return -ETIMEDOUT;
3235ae79d58b8d Piotr Sroka 2019-09-18 2651
3235ae79d58b8d Piotr Sroka 2019-09-18 2652
cadence_nand_set_ecc_strength(cdns_ctrl,
3235ae79d58b8d Piotr Sroka 2019-09-18 2653
cdns_chip->corr_str_idx);
3235ae79d58b8d Piotr Sroka 2019-09-18 2654
3235ae79d58b8d Piotr Sroka 2019-09-18 2655
cadence_nand_set_erase_detection(cdns_ctrl, true,
3235ae79d58b8d Piotr Sroka 2019-09-18 2656
chip->ecc.strength);
3235ae79d58b8d Piotr Sroka 2019-09-18 2657
3235ae79d58b8d Piotr Sroka 2019-09-18 2658 /* Override the default read
operations. */
3235ae79d58b8d Piotr Sroka 2019-09-18 2659 chip->ecc.read_page =
cadence_nand_read_page;
3235ae79d58b8d Piotr Sroka 2019-09-18 2660 chip->ecc.read_page_raw =
cadence_nand_read_page_raw;
3235ae79d58b8d Piotr Sroka 2019-09-18 2661 chip->ecc.write_page =
cadence_nand_write_page;
3235ae79d58b8d Piotr Sroka 2019-09-18 2662 chip->ecc.write_page_raw =
cadence_nand_write_page_raw;
3235ae79d58b8d Piotr Sroka 2019-09-18 2663 chip->ecc.read_oob =
cadence_nand_read_oob;
3235ae79d58b8d Piotr Sroka 2019-09-18 2664 chip->ecc.write_oob =
cadence_nand_write_oob;
3235ae79d58b8d Piotr Sroka 2019-09-18 2665 chip->ecc.read_oob_raw =
cadence_nand_read_oob_raw;
3235ae79d58b8d Piotr Sroka 2019-09-18 2666 chip->ecc.write_oob_raw =
cadence_nand_write_oob_raw;
3235ae79d58b8d Piotr Sroka 2019-09-18 2667
3235ae79d58b8d Piotr Sroka 2019-09-18 2668 if ((mtd->writesize + mtd->oobsize)
> cdns_ctrl->buf_size) {
3235ae79d58b8d Piotr Sroka 2019-09-18 2669 cdns_ctrl->buf_size =
mtd->writesize + mtd->oobsize;
3235ae79d58b8d Piotr Sroka 2019-09-18 2670 kfree(cdns_ctrl->buf);
3235ae79d58b8d Piotr Sroka 2019-09-18 2671 cdns_ctrl->buf =
kzalloc(cdns_ctrl->buf_size, GFP_KERNEL);
3235ae79d58b8d Piotr Sroka 2019-09-18 2672 if (!cdns_ctrl->buf) {
3235ae79d58b8d Piotr Sroka 2019-09-18 2673 ret = -ENOMEM;
3235ae79d58b8d Piotr Sroka 2019-09-18 2674 goto free_buf;
3235ae79d58b8d Piotr Sroka 2019-09-18 2675 }
3235ae79d58b8d Piotr Sroka 2019-09-18 2676 }
3235ae79d58b8d Piotr Sroka 2019-09-18 2677
3235ae79d58b8d Piotr Sroka 2019-09-18 2678 /* Is 32-bit DMA supported? */
3235ae79d58b8d Piotr Sroka 2019-09-18 2679 ret =
dma_set_mask(cdns_ctrl->dev, DMA_BIT_MASK(32));
3235ae79d58b8d Piotr Sroka 2019-09-18 2680 if (ret) {
3235ae79d58b8d Piotr Sroka 2019-09-18 2681 dev_err(cdns_ctrl->dev, "no
usable DMA configuration\n");
3235ae79d58b8d Piotr Sroka 2019-09-18 2682 goto free_buf;
3235ae79d58b8d Piotr Sroka 2019-09-18 2683 }
3235ae79d58b8d Piotr Sroka 2019-09-18 2684
3235ae79d58b8d Piotr Sroka 2019-09-18 2685 mtd_set_ooblayout(mtd,
&cadence_nand_ooblayout_ops);
3235ae79d58b8d Piotr Sroka 2019-09-18 2686
3235ae79d58b8d Piotr Sroka 2019-09-18 2687 return 0;
3235ae79d58b8d Piotr Sroka 2019-09-18 2688
3235ae79d58b8d Piotr Sroka 2019-09-18 2689 free_buf:
3235ae79d58b8d Piotr Sroka 2019-09-18 2690 kfree(cdns_ctrl->buf);
3235ae79d58b8d Piotr Sroka 2019-09-18 2691
3235ae79d58b8d Piotr Sroka 2019-09-18 2692 return ret;
3235ae79d58b8d Piotr Sroka 2019-09-18 2693 }
3235ae79d58b8d Piotr Sroka 2019-09-18 2694
---
0-DAY kernel test infrastructure Open Source Technology Center
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Intel Corporation
