From 505d1caa79cd61a70615e9a7eae2eab85e797a83 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Wed, 4 Jun 2008 17:00:35 +0300 Subject: [PATCH] UBI: do not forget to free internal volumes UBI forgets to free internal volumes when detaching MTD device. Fix this. Pointed-out-by: Adrian Hunter Signed-off-by: Artem Bityutskiy --- drivers/mtd/ubi/build.c | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c index 7b42b4d05b..33205e4c1f 100644 --- a/drivers/mtd/ubi/build.c +++ b/drivers/mtd/ubi/build.c @@ -422,6 +422,10 @@ out_unreg: /** * uif_close - close user interfaces for an UBI device. * @ubi: UBI device description object + * + * Note, since this function un-registers UBI volume device objects (@vol->dev), + * the memory allocated voe the volumes is freed as well (in the release + * function). */ static void uif_close(struct ubi_device *ubi) { @@ -431,6 +435,21 @@ static void uif_close(struct ubi_device *ubi) unregister_chrdev_region(ubi->cdev.dev, ubi->vtbl_slots + 1); } +/** + * free_internal_volumes - free internal volumes. + * @ubi: UBI device description object + */ +static void free_internal_volumes(struct ubi_device *ubi) +{ + int i; + + for (i = ubi->vtbl_slots; + i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) { + kfree(ubi->volumes[i]->eba_tbl); + kfree(ubi->volumes[i]); + } +} + /** * attach_by_scanning - attach an MTD device using scanning method. * @ubi: UBI device descriptor @@ -475,6 +494,7 @@ static int attach_by_scanning(struct ubi_device *ubi) out_wl: ubi_wl_close(ubi); out_vtbl: + free_internal_volumes(ubi); vfree(ubi->vtbl); out_si: ubi_scan_destroy_si(si); @@ -650,7 +670,7 @@ static int autoresize(struct ubi_device *ubi, int vol_id) /* * Clear the auto-resize flag in the volume in-memory copy of the - * volume table, and 'ubi_resize_volume()' will propogate this change + * volume table, and 'ubi_resize_volume()' will propagate this change * to the flash. */ ubi->vtbl[vol_id].flags &= ~UBI_VTBL_AUTORESIZE_FLG; @@ -659,7 +679,7 @@ static int autoresize(struct ubi_device *ubi, int vol_id) struct ubi_vtbl_record vtbl_rec; /* - * No avalilable PEBs to re-size the volume, clear the flag on + * No available PEBs to re-size the volume, clear the flag on * flash and exit. */ memcpy(&vtbl_rec, &ubi->vtbl[vol_id], @@ -692,7 +712,7 @@ static int autoresize(struct ubi_device *ubi, int vol_id) * * This function attaches MTD device @mtd_dev to UBI and assign @ubi_num number * to the newly created UBI device, unless @ubi_num is %UBI_DEV_NUM_AUTO, in - * which case this function finds a vacant device nubert and assings it + * which case this function finds a vacant device number and assigns it * automatically. Returns the new UBI device number in case of success and a * negative error code in case of failure. * @@ -841,6 +861,7 @@ out_uif: uif_close(ubi); out_detach: ubi_wl_close(ubi); + free_internal_volumes(ubi); vfree(ubi->vtbl); out_free: vfree(ubi->peb_buf1); @@ -903,6 +924,7 @@ int ubi_detach_mtd_dev(int ubi_num, int anyway) uif_close(ubi); ubi_wl_close(ubi); + free_internal_volumes(ubi); vfree(ubi->vtbl); put_mtd_device(ubi->mtd); vfree(ubi->peb_buf1); -- 2.39.5