74d00a8c38
* properly format/comment all patches * merge debloat patches * merge Kconfig patches * merge swconfig patches * merge hotplug patches * drop 200-fix_localversion.patch - upstream * drop 222-arm_zimage_none.patch - unused * drop 252-mv_cesa_depends.patch - no longer required * drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused * drop 661-fq_codel_keep_dropped_stats.patch - outdated * drop 702-phy_add_aneg_done_function.patch - upstream * drop 840-rtc7301.patch - unused * drop 841-rtc_pt7c4338.patch - upstream * drop 921-use_preinit_as_init.patch - unused * drop spio-gpio-old and gpio-mmc - unused Signed-off-by: John Crispin <john@phrozen.org>
45 lines
1.5 KiB
Diff
45 lines
1.5 KiB
Diff
From: Tim Harvey <tharvey@gateworks.com>
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Subject: mtd: allow partial block unlock
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This allows sysupgrade for devices such as the Gateworks Avila/Cambria
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product families based on the ixp4xx using the redboot bootloader with
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combined FIS directory and RedBoot config partitions on larger FLASH
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devices with larger eraseblocks.
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This second iteration of this patch addresses previous issues:
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- whitespace breakage fixed
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- unlock in all scenarios
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- simplification and fix logic bug
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[john@phrozen.org: this should be moved to the ixp4xx folder]
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Signed-off-by: Tim Harvey <tharvey@gateworks.com>
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---
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drivers/mtd/mtdpart.c | 11 ++++++++++-
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1 file changed, 10 insertions(+), 1 deletion(-)
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diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
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index 0238b0babe2f..d41418524833 100644
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--- a/drivers/mtd/mtdpart.c
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+++ b/drivers/mtd/mtdpart.c
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@@ -343,7 +343,16 @@ static int part_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
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static int part_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len)
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{
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struct mtd_part *part = mtd_to_part(mtd);
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- return part->parent->_unlock(part->parent, ofs + part->offset, len);
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+
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+ ofs += part->offset;
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+
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+ if (mtd->flags & MTD_ERASE_PARTIAL) {
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+ /* round up len to next erasesize and round down offset to prev block */
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+ len = (mtd_div_by_eb(len, part->parent) + 1) * part->parent->erasesize;
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+ ofs &= ~(part->parent->erasesize - 1);
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+ }
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+
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+ return part->parent->_unlock(part->parent, ofs, len);
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}
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static int part_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len)
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--
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2.11.0
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