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authorJulia Lawall <Julia.Lawall@lip6.fr>2016-05-06 22:39:30 +0100
committerIngo Molnar <mingo@kernel.org>2016-05-07 07:06:13 +0200
commit1cfd63166c8e7494a1b457df9bb291a601091c26 (patch)
tree8ec3ebf76cd744f4f547d72e3aa1842d59ccf8cc /drivers/firmware
parentfb7a84cac03541f4da18dfa25b3f4767d4efc6fc (diff)
downloadlinux-1cfd63166c8e7494a1b457df9bb291a601091c26.tar.bz2
efi: Merge boolean flag arguments
The parameters atomic and duplicates of efivar_init always have opposite values. Drop the parameter atomic, replace the uses of !atomic with duplicates, and update the call sites accordingly. The code using duplicates is slightly reorganized with an 'else', to avoid duplicating the lock code. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jeremy Kerr <jk@ozlabs.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matthew Garrett <mjg59@srcf.ucam.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Saurabh Sengar <saurabh.truth@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vaishali Thakkar <vaishali.thakkar@oracle.com> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/1462570771-13324-5-git-send-email-matt@codeblueprint.co.uk Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/efi/efivars.c5
-rw-r--r--drivers/firmware/efi/vars.c23
2 files changed, 12 insertions, 16 deletions
diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c
index 096adcbcb5a9..116b244dee68 100644
--- a/drivers/firmware/efi/efivars.c
+++ b/drivers/firmware/efi/efivars.c
@@ -661,7 +661,7 @@ static void efivar_update_sysfs_entries(struct work_struct *work)
return;
err = efivar_init(efivar_update_sysfs_entry, entry,
- true, false, &efivar_sysfs_list);
+ false, &efivar_sysfs_list);
if (!err)
break;
@@ -730,8 +730,7 @@ int efivars_sysfs_init(void)
return -ENOMEM;
}
- efivar_init(efivars_sysfs_callback, NULL, false,
- true, &efivar_sysfs_list);
+ efivar_init(efivars_sysfs_callback, NULL, true, &efivar_sysfs_list);
error = create_efivars_bin_attributes();
if (error) {
diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c
index 0012331d5a3d..d3b751383286 100644
--- a/drivers/firmware/efi/vars.c
+++ b/drivers/firmware/efi/vars.c
@@ -419,8 +419,7 @@ static void dup_variable_bug(efi_char16_t *str16, efi_guid_t *vendor_guid,
* Returns 0 on success, or a kernel error code on failure.
*/
int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
- void *data, bool atomic, bool duplicates,
- struct list_head *head)
+ void *data, bool duplicates, struct list_head *head)
{
const struct efivar_operations *ops = __efivars->ops;
unsigned long variable_name_size = 1024;
@@ -450,7 +449,7 @@ int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
&vendor_guid);
switch (status) {
case EFI_SUCCESS:
- if (!atomic)
+ if (duplicates)
spin_unlock_irq(&__efivars->lock);
variable_name_size = var_name_strnsize(variable_name,
@@ -465,21 +464,19 @@ int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
* and may end up looping here forever.
*/
if (duplicates &&
- variable_is_present(variable_name, &vendor_guid, head)) {
+ variable_is_present(variable_name, &vendor_guid,
+ head)) {
dup_variable_bug(variable_name, &vendor_guid,
variable_name_size);
- if (!atomic)
- spin_lock_irq(&__efivars->lock);
-
status = EFI_NOT_FOUND;
- break;
+ } else {
+ err = func(variable_name, vendor_guid,
+ variable_name_size, data);
+ if (err)
+ status = EFI_NOT_FOUND;
}
- err = func(variable_name, vendor_guid, variable_name_size, data);
- if (err)
- status = EFI_NOT_FOUND;
-
- if (!atomic)
+ if (duplicates)
spin_lock_irq(&__efivars->lock);
break;