[Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/6] dma-buf: Introduce selftesting framework (rev3)

[Patchwork]

== Series Details ==

Series: series starting with [1/6] dma-buf: Introduce selftesting framework (rev3)
URL   : https://patchwork.freedesktop.org/series/65353/
State : warning

== Summary ==

$ dim checkpatch origin/drm-tip
e16973981faa dma-buf: Introduce selftesting framework
-:27: WARNING:CONFIG_DESCRIPTION: please write a paragraph that describes the config symbol fully
#27: FILE: drivers/dma-buf/Kconfig:42:
+config DMABUF_SELFTESTS

-:45: WARNING:FILE_PATH_CHANGES: added, moved or deleted file(s), does MAINTAINERS need updating?
#45: 
new file mode 100644

-:50: WARNING:SPDX_LICENSE_TAG: Improper SPDX comment style for 'drivers/dma-buf/selftest.c', please use '//' instead
#50: FILE: drivers/dma-buf/selftest.c:1:
+/* SPDX-License-Identifier: MIT */

-:50: WARNING:SPDX_LICENSE_TAG: Missing or malformed SPDX-License-Identifier tag in line 1
#50: FILE: drivers/dma-buf/selftest.c:1:
+/* SPDX-License-Identifier: MIT */

-:70: ERROR:BRACKET_SPACE: space prohibited before open square bracket '['
#70: FILE: drivers/dma-buf/selftest.c:21:
+#define selftest(n, f) [__idx_##n] = { .name = #n, .func = f },

-:78: CHECK:LINE_SPACING: Please use a blank line after function/struct/union/enum declarations
#78: FILE: drivers/dma-buf/selftest.c:29:
+};
+#undef selftest

-:82: WARNING:TRAILING_SEMICOLON: macros should not use a trailing semicolon
#82: FILE: drivers/dma-buf/selftest.c:33:
+#define selftest_0(n, func, id) \
+module_param_named(id, selftests[__idx_##n].enabled, bool, 0400);

-:84: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'n' - possible side-effects?
#84: FILE: drivers/dma-buf/selftest.c:35:
+#define selftest(n, func) selftest_0(n, func, param(n))

-:223: WARNING:SPDX_LICENSE_TAG: Improper SPDX comment style for 'drivers/dma-buf/selftest.h', please use '/*' instead
#223: FILE: drivers/dma-buf/selftest.h:1:
+// SPDX-License-Identifier: MIT

-:223: WARNING:SPDX_LICENSE_TAG: Missing or malformed SPDX-License-Identifier tag in line 1
#223: FILE: drivers/dma-buf/selftest.h:1:
+// SPDX-License-Identifier: MIT

-:234: WARNING:TRAILING_SEMICOLON: macros should not use a trailing semicolon
#234: FILE: drivers/dma-buf/selftest.h:12:
+#define selftest(name, func) int func(void);

-:247: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'T' - possible side-effects?
#247: FILE: drivers/dma-buf/selftest.h:25:
+#define subtests(T, data) \
+	__subtests(__func__, T, ARRAY_SIZE(T), data)

total: 1 errors, 8 warnings, 3 checks, 224 lines checked
7fddd1caea50 dma-buf: Add selftests for dma-fence
-:35: WARNING:FILE_PATH_CHANGES: added, moved or deleted file(s), does MAINTAINERS need updating?
#35: 
new file mode 100644

-:40: WARNING:SPDX_LICENSE_TAG: Improper SPDX comment style for 'drivers/dma-buf/st-dma-fence.c', please use '//' instead
#40: FILE: drivers/dma-buf/st-dma-fence.c:1:
+/* SPDX-License-Identifier: MIT */

-:40: WARNING:SPDX_LICENSE_TAG: Missing or malformed SPDX-License-Identifier tag in line 1
#40: FILE: drivers/dma-buf/st-dma-fence.c:1:
+/* SPDX-License-Identifier: MIT */

-:60: WARNING:USE_SPINLOCK_T: struct spinlock should be spinlock_t
#60: FILE: drivers/dma-buf/st-dma-fence.c:21:
+	struct spinlock lock;

-:192: WARNING:MEMORY_BARRIER: memory barrier without comment
#192: FILE: drivers/dma-buf/st-dma-fence.c:153:
+	smp_store_mb(container_of(cb, struct simple_cb, cb)->seen, true);

-:500: WARNING:MEMORY_BARRIER: memory barrier without comment
#500: FILE: drivers/dma-buf/st-dma-fence.c:461:
+		smp_wmb();

-:511: WARNING:MEMORY_BARRIER: memory barrier without comment
#511: FILE: drivers/dma-buf/st-dma-fence.c:472:
+		smp_store_mb(cb.seen, false);

-:534: WARNING:MEMORY_BARRIER: memory barrier without comment
#534: FILE: drivers/dma-buf/st-dma-fence.c:495:
+		smp_wmb();

-:599: WARNING:EMBEDDED_FUNCTION_NAME: Prefer using '"%s...", __func__' to using 'dma_fence', this function's name, in a string
#599: FILE: drivers/dma-buf/st-dma-fence.c:560:
+	pr_info("sizeof(dma_fence)=%lu\n", sizeof(struct dma_fence));

total: 0 errors, 9 warnings, 0 checks, 584 lines checked
193bf5443d1e dma-fence: Shrink size of struct dma_fence
-:27: CHECK:UNCOMMENTED_DEFINITION: spinlock_t definition without comment
#27: FILE: include/linux/dma-fence.h:66:
+	spinlock_t *lock;

total: 0 errors, 0 warnings, 1 checks, 21 lines checked
c7c0ee948b31 dma-fence: Avoid list_del during fence->cb_list iteration
1de075a7a6cb dma-fence: Simply wrap dma_fence_signal_locked with dma_fence_signal
3105c8cfc60f dma-fence: Store the timestamp in the same union as the cb_list