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generic: v6.6: update fitblk driver to work with Linux 6.6

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Update fitblk driver which has previously been backported to Linux 6.1
so it can build and work with Linux 6.6.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2024-03-01 00:08:35 +00:00 committed by Robert Marko
parent 6be4e487da
commit d356fb33c3
1 changed files with 30 additions and 7 deletions
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37
target/linux/generic/pending-6.6/510-block-add-uImage.FIT-subimage-block-driver.patch
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@ -81,7 +81,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
swim_mod-y := swim.o swim_asm.o
--- /dev/null
+++ b/drivers/block/fitblk.c
@@ -0,0 +1,636 @@
@@ -0,0 +1,659 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * uImage.FIT virtual block device driver.
@ -199,9 +199,9 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+ bool dead;
+};
+
+static int fitblk_open(struct block_device *bdev, fmode_t mode)
+static int fitblk_open(struct gendisk *disk, fmode_t mode)
+{
+ struct fitblk *fitblk = bdev->bd_disk->private_data;
+ struct fitblk *fitblk = disk->private_data;
+
+ if (fitblk->dead)
+ return -ENOENT;
@ -209,7 +209,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+ return 0;
+}
+
+static void fitblk_release(struct gendisk *disk, fmode_t mode)
+static void fitblk_release(struct gendisk *disk)
+{
+ return;
+}
@ -283,7 +283,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+
+ if (refcount_dec_if_one(&num_devs)) {
+ sysfs_remove_link(&pdev->dev.kobj, "lower_dev");
+ blkdev_put(fitblk->lower_bdev, FMODE_READ | FMODE_EXCL);
+ blkdev_put(fitblk->lower_bdev, &_fitblk_claim_ptr);
+ }
+
+ kfree(fitblk);
@ -373,6 +373,29 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+ return err;
+}
+
+static void fitblk_mark_dead(struct block_device *bdev, bool surprise)
+{
+ struct list_head *n, *tmp;
+ struct fitblk *fitblk;
+
+ mutex_lock(&devices_mutex);
+ list_for_each_safe(n, tmp, &fitblk_devices) {
+ fitblk = list_entry(n, struct fitblk, list);
+ if (fitblk->lower_bdev != bdev)
+ continue;
+
+ fitblk->dead = true;
+ list_del(&fitblk->list);
+ /* removal needs to be deferred to avoid deadlock */
+ schedule_work(&fitblk->remove_work);
+ }
+ mutex_unlock(&devices_mutex);
+}
+
+static const struct blk_holder_ops fitblk_hops = {
+ .mark_dead = fitblk_mark_dead,
+};
+
+static int parse_fit_on_dev(struct device *dev)
+{
+ struct block_device *bdev;
@ -401,7 +424,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+ unsigned int slot = 0;
+
+ /* Exclusive open the block device to receive holder notifications */
+ bdev = blkdev_get_by_dev(dev->devt, FMODE_READ | FMODE_EXCL, &_fitblk_claim_ptr);
+ bdev = blkdev_get_by_dev(dev->devt, BLK_OPEN_READ, &_fitblk_claim_ptr, &fitblk_hops);
+ if (!bdev)
+ return -ENODEV;
+
@ -653,7 +676,7 @@ Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+ kfree(fit);
+out_blkdev:
+ if (!found || ret)
+ blkdev_put(bdev, FMODE_READ | FMODE_EXCL);
+ blkdev_put(bdev, &_fitblk_claim_ptr);
+
+ return ret;
+}