path: root/lib
diff options
authorLinus Torvalds <>2021-05-05 12:39:29 -0700
committerLinus Torvalds <>2021-05-05 12:39:29 -0700
commit5d6a1b84e07607bc282ed2ed8e2f128c73697d5c (patch)
tree8d4e6f236bf3bbde71db168c6304e79a732e3fc6 /lib
parent5a5bcd43d5bf9d553ebbf9bc3425a4e77439fdbe (diff)
parent444952956f34a5de935159561d56a34276ffffd6 (diff)
Merge tag 'gpio-updates-for-v5.13-v2' of git://
Pull gpio updates from Bartosz Golaszewski: - new driver for the Realtek Otto GPIO controller - ACPI support for gpio-mpc8xxx - edge event support for gpio-sch (+ Kconfig fixes) - Kconfig improvements in gpio-ich - fixes to older issues in gpio-mockup - ACPI quirk for ignoring EC wakeups on Dell Venue 10 Pro 5055 - improve the GPIO aggregator code by using more generic interfaces instead of reimplementing them in the driver - convert the DT bindings for gpio-74x164 to yaml - documentation improvements - a slew of other minor fixes and improvements to GPIO drivers * tag 'gpio-updates-for-v5.13-v2' of git:// (34 commits) dt-bindings: gpio: add YAML description for rockchip,gpio-bank gpio: mxs: remove useless function dt-bindings: gpio: fairchild,74hc595: Convert to json-schema gpio: it87: remove unused code gpio: 104-dio-48e: Fix coding style issues gpio: mpc8xxx: Add ACPI support gpio: ich: Switch to be dependent on LPC_ICH gpio: sch: Drop MFD_CORE selection gpio: sch: depends on LPC_SCH gpiolib: acpi: Add quirk to ignore EC wakeups on Dell Venue 10 Pro 5055 gpio: sch: Hook into ACPI GPE handler to catch GPIO edge events gpio: sch: Add edge event support gpio: aggregator: Replace custom get_arg() with a generic next_arg() lib/cmdline: Export next_arg() for being used in modules gpio: omap: Use device_get_match_data() helper gpio: Add Realtek Otto GPIO support dt-bindings: gpio: Binding for Realtek Otto GPIO docs: kernel-parameters: Add gpio_mockup_named_lines docs: kernel-parameters: Move gpio-mockup for alphabetic order lib: bitmap: provide devm_bitmap_alloc() and devm_bitmap_zalloc() ...
Diffstat (limited to 'lib')
2 files changed, 39 insertions, 4 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 9f4626a4c95f..74ceb02f45e3 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -3,17 +3,19 @@
* lib/bitmap.c
* Helper functions for bitmap.h.
-#include <linux/export.h>
-#include <linux/thread_info.h>
-#include <linux/ctype.h>
-#include <linux/errno.h>
#include <linux/bitmap.h>
#include <linux/bitops.h>
#include <linux/bug.h>
+#include <linux/ctype.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/string.h>
+#include <linux/thread_info.h>
#include <linux/uaccess.h>
#include <asm/page.h>
@@ -1271,6 +1273,38 @@ void bitmap_free(const unsigned long *bitmap)
+static void devm_bitmap_free(void *data)
+ unsigned long *bitmap = data;
+ bitmap_free(bitmap);
+unsigned long *devm_bitmap_alloc(struct device *dev,
+ unsigned int nbits, gfp_t flags)
+ unsigned long *bitmap;
+ int ret;
+ bitmap = bitmap_alloc(nbits, flags);
+ if (!bitmap)
+ return NULL;
+ ret = devm_add_action_or_reset(dev, devm_bitmap_free, bitmap);
+ if (ret)
+ return NULL;
+ return bitmap;
+unsigned long *devm_bitmap_zalloc(struct device *dev,
+ unsigned int nbits, gfp_t flags)
+ return devm_bitmap_alloc(dev, nbits, flags | __GFP_ZERO);
#if BITS_PER_LONG == 64
* bitmap_from_arr32 - copy the contents of u32 array of bits to bitmap
diff --git a/lib/cmdline.c b/lib/cmdline.c
index 5d474c626e24..5546bf588780 100644
--- a/lib/cmdline.c
+++ b/lib/cmdline.c
@@ -272,3 +272,4 @@ char *next_arg(char *args, char **param, char **val)
/* Chew up trailing spaces. */
return skip_spaces(args);