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Message-ID: <5714D3A4.2050405@ti.com> Date: Mon, 18 Apr 2016 15:31:32 +0300 From: Roger Quadros <rogerq@...com> To: Boris Brezillon <boris.brezillon@...e-electrons.com>, Tony Lindgren <tony@...mide.com> CC: <javier@...hile0.org>, <fcooper@...com>, <nsekhar@...com>, <linux-mtd@...ts.infradead.org>, <linux-omap@...r.kernel.org>, <computersforpeace@...il.com>, <dwmw2@...radead.org>, <ezequiel@...guardiasur.com.ar>, <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v6 00/17] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms On 16/04/16 11:57, Boris Brezillon wrote: > On Fri, 15 Apr 2016 09:19:51 -0700 > Tony Lindgren <tony@...mide.com> wrote: > >> >>> Or should I just pull this immutable branch in my current nand/next and >>> let you pull the same immutable branch in omap-soc. I mean, would this >>> prevent conflicts when our branches are merged into linux-next, no >>> matter the order. >> >> Ideally just one or more branches with just minimal changes in >> them against -rc1. But you may have other dependencies in >> your NAND tree so that may no longer be doable :) Usually if >> I merge something that may need to get merged into other >> branches, I just apply them into a separate branch against -rc1 >> to start with, then merge that branch in. > > Okay, in this case, that's pretty much what I did from the beginning, > except the immutable branch was provided by Roger (based on 4.6-rc1). > Thanks for this detailed explanation, I'll try to remember that when > I'll need to provide an immutable branch for another subsystem. > > Roger, my request remains, could you check/test my conflict resolution > (branch nand/next-with-gpmc-rework)? I couldn't test that branch yet as nand/next is broken on omap platforms (at least on dra7-evm). The commit where it breaks is: a662ef4 mtd: nand: omap2: use mtd_ooblayout_xxx() helpers where appropriate I'm trying to figure out what went wrong there. Failure log below. --cheers, -roger == attaching ubi to mtd9 [ 27.173973] ubi0: attaching mtd9 [ 27.178311] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.184828] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.191324] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes from PEB 0:0, read only 64 bytes, retry [ 27.203378] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.209860] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.216388] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes from PEB 0:0, read only 64 bytes, retry [ 27.228468] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.234976] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.241471] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 64 bytes from PEB 0:0, read only 64 bytes, retry [ 27.253802] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.260278] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.266812] ubi0 error: ubi_io_read: error -74 (ECC error) while reading 64 bytes from PEB 0:0, read 64 bytes [ 27.277254] CPU: 0 PID: 2032 Comm: ubiattach Not tainted 4.6.0-rc1-00053-ga662ef4 #625 [ 27.285549] Hardware name: Generic DRA74X (Flattened Device Tree) [ 27.291949] [<c010feec>] (unwind_backtrace) from [<c010c110>] (show_stack+0x10/0x14) [ 27.300083] [<c010c110>] (show_stack) from [<c0470f24>] (dump_stack+0xac/0xe0) [ 27.307664] [<c0470f24>] (dump_stack) from [<c05a5f8c>] (ubi_io_read+0x11c/0x2fc) [ 27.315511] [<c05a5f8c>] (ubi_io_read) from [<c05a6388>] (ubi_io_read_ec_hdr+0x44/0x228) [ 27.323989] [<c05a6388>] (ubi_io_read_ec_hdr) from [<c05aaef8>] (ubi_attach+0x138/0x149c) [ 27.332579] [<c05aaef8>] (ubi_attach) from [<c059fc78>] (ubi_attach_mtd_dev+0x3d0/0xbe4) [ 27.341063] [<c059fc78>] (ubi_attach_mtd_dev) from [<c05a15d4>] (ctrl_cdev_ioctl+0xe4/0x224) [ 27.349928] [<c05a15d4>] (ctrl_cdev_ioctl) from [<c029e380>] (do_vfs_ioctl+0x90/0xa2c) [ 27.358242] [<c029e380>] (do_vfs_ioctl) from [<c029ed88>] (SyS_ioctl+0x6c/0x7c) [ 27.365910] [<c029ed88>] (SyS_ioctl) from [<c0107840>] (ret_fast_syscall+0x0/0x1c) [ 27.374541] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.381025] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.387551] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 512 bytes from PEB 0:512, read only 512 bytes, retry [ 27.399953] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.406465] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.412950] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 512 bytes from PEB 0:512, read only 512 bytes, retry [ 27.425349] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.431837] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.438356] ubi0 warning: ubi_io_read: error -74 (ECC error) while reading 512 bytes from PEB 0:512, read only 512 bytes, retry [ 27.450735] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.457243] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.463739] ubi0 error: ubi_io_read: error -74 (ECC error) while reading 512 bytes from PEB 0:512, read 512 bytes [ 27.474526] CPU: 0 PID: 2032 Comm: ubiattach Not tainted 4.6.0-rc1-00053-ga662ef4 #625 [ 27.482824] Hardware name: Generic DRA74X (Flattened Device Tree) [ 27.489218] [<c010feec>] (unwind_backtrace) from [<c010c110>] (show_stack+0x10/0x14) [ 27.497348] [<c010c110>] (show_stack) from [<c0470f24>] (dump_stack+0xac/0xe0) [ 27.504923] [<c0470f24>] (dump_stack) from [<c05a5f8c>] (ubi_io_read+0x11c/0x2fc) [ 27.512772] [<c05a5f8c>] (ubi_io_read) from [<c05a65b8>] (ubi_io_read_vid_hdr+0x4c/0x230) [ 27.521355] [<c05a65b8>] (ubi_io_read_vid_hdr) from [<c05ab04c>] (ubi_attach+0x28c/0x149c) [ 27.530024] [<c05ab04c>] (ubi_attach) from [<c059fc78>] (ubi_attach_mtd_dev+0x3d0/0xbe4) [ 27.538517] [<c059fc78>] (ubi_attach_mtd_dev) from [<c05a15d4>] (ctrl_cdev_ioctl+0xe4/0x224) [ 27.547409] [<c05a15d4>] (ctrl_cdev_ioctl) from [<c029e380>] (do_vfs_ioctl+0x90/0xa2c) [ 27.555736] [<c029e380>] (do_vfs_ioctl) from [<c029ed88>] (SyS_ioctl+0x6c/0x7c) [ 27.563415] [<c029ed88>] (SyS_ioctl) from [<c0107840>] (ret_fast_syscall+0x0/0x1c) [ 27.572208] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.579160] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.586560] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.593311] omap2-nand omap2-nand.0: uncorrectable bit-flips found [ 27.600038] omap2-nand omap2-nand.0: uncorrectable bit-flips found
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