Christian König aa3f93cd75 dma-buf: fix compare in WARN_ON_ONCE
Smatch pointed out this trivial typo:
	drivers/dma-buf/dma-buf.c:1123 dma_buf_map_attachment()
	warn: passing positive error code '16' to 'ERR_PTR'

drivers/dma-buf/dma-buf.c
    1113         dma_resv_assert_held(attach->dmabuf->resv);
    1114
    1115         if (dma_buf_pin_on_map(attach)) {
    1116                 ret = attach->dmabuf->ops->pin(attach);
    1117                 /*
    1118                  * Catch exporters making buffers inaccessible even when
    1119                  * attachments preventing that exist.
    1120                  */
    1121                 WARN_ON_ONCE(ret == EBUSY);
                                             ^^^^^
This was probably intended to be -EBUSY?

    1122                 if (ret)
--> 1123                         return ERR_PTR(ret);
                                                ^^^
Otherwise we will eventually crash.

    1124         }
    1125
    1126         sg_table = attach->dmabuf->ops->map_dma_buf(attach, direction);
    1127         if (!sg_table)
    1128                 sg_table = ERR_PTR(-ENOMEM);
    1129         if (IS_ERR(sg_table))
    1130                 goto error_unpin;
    1131

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Link: https://lore.kernel.org/r/20250605085336.62156-1-christian.koenig@amd.com
2025-06-11 11:42:49 +02:00
2025-06-08 13:44:43 -07:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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