Commit-ID: 47514c996fac5e6f13ef3a4c5e23f1c5cffabb7b
Gitweb: http://git.kernel.org/tip/47514c996fac5e6f13ef3a4c5e23f1c5cffabb7b
Author: Matt Fleming <matt.fleming@xxxxxxxxx>
AuthorDate: Thu, 10 Apr 2014 14:11:45 +0100
Committer: Matt Fleming <matt.fleming@xxxxxxxxx>
CommitDate: Thu, 10 Apr 2014 21:20:03 +0100
efi: Pass correct file handle to efi_file_{read,close}
We're currently passing the file handle for the root file system to
efi_file_read() and efi_file_close(), instead of the file handle for the
file we wish to read/close.
While this has worked up until now, it seems that it has only been by
pure luck. Olivier explains,
"The issue is the UEFI Fat driver might return the same function for
'fh->read()' and 'h->read()'. While in our case it does not work with
a different implementation of EFI_SIMPLE_FILE_SYSTEM_PROTOCOL. In our
case, we return a different pointer when reading a directory and
reading a file."
Fixing this actually clears up the two functions because we can drop one
of the arguments, and instead only pass a file 'handle' argument.
Reported-by: Olivier Martin <olivier.martin@xxxxxxx>
Reviewed-by: Olivier Martin <olivier.martin@xxxxxxx>
Reviewed-by: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Leif Lindholm <leif.lindholm@xxxxxxxxxx>
Signed-off-by: Matt Fleming <matt.fleming@xxxxxxxxx>
---
arch/x86/boot/compressed/eboot.c | 12 ++++++------
drivers/firmware/efi/efi-stub-helper.c | 6 +++---
2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index 91d1700..4703a6c 100644
--- a/arch/x86/boot/compressed/eboot.c
+++ b/arch/x86/boot/compressed/eboot.c
@@ -167,31 +167,31 @@ efi_file_size(efi_system_table_t *sys_table, void *__fh,
}
static inline efi_status_t
-efi_file_read(void *__fh, void *handle, unsigned long *size, void *addr)
+efi_file_read(void *handle, unsigned long *size, void *addr)
{
unsigned long func;
if (efi_early->is64) {
- efi_file_handle_64_t *fh = __fh;
+ efi_file_handle_64_t *fh = handle;
func = (unsigned long)fh->read;
return efi_early->call(func, handle, size, addr);
} else {
- efi_file_handle_32_t *fh = __fh;
+ efi_file_handle_32_t *fh = handle;
func = (unsigned long)fh->read;
return efi_early->call(func, handle, size, addr);
}
}
-static inline efi_status_t efi_file_close(void *__fh, void *handle)
+static inline efi_status_t efi_file_close(void *handle)
{
if (efi_early->is64) {
- efi_file_handle_64_t *fh = __fh;
+ efi_file_handle_64_t *fh = handle;
return efi_early->call((unsigned long)fh->close, handle);
} else {
- efi_file_handle_32_t *fh = __fh;
+ efi_file_handle_32_t *fh = handle;
return efi_early->call((unsigned long)fh->close, handle);
}
diff --git a/drivers/firmware/efi/efi-stub-helper.c b/drivers/firmware/efi/efi-stub-helper.c
index ff50aee..2c41eae 100644
--- a/drivers/firmware/efi/efi-stub-helper.c
+++ b/drivers/firmware/efi/efi-stub-helper.c
@@ -397,7 +397,7 @@ static efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
else
chunksize = size;
- status = efi_file_read(fh, files[j].handle,
+ status = efi_file_read(files[j].handle,
&chunksize,
(void *)addr);
if (status != EFI_SUCCESS) {
@@ -408,7 +408,7 @@ static efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
size -= chunksize;
}
- efi_file_close(fh, files[j].handle);
+ efi_file_close(files[j].handle);
}
}
@@ -425,7 +425,7 @@ free_file_total:
close_handles:
for (k = j; k < i; k++)
- efi_file_close(fh, files[k].handle);
+ efi_file_close(files[k].handle);
free_files:
efi_call_early(free_pool, files);
fail:
--
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