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Use FIELD_GET() to extract PCIe capability register fields instead of
custom masking and shifting. Also remove the unnecessary cast to u8, the
value in those fields always fits to u8.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230913122748.29530-8-ilpo.jarvinen@linux.intel.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fundamentally semaphores are a counted primitive, but
DEFINE_SEMAPHORE() does not expose this and explicitly creates a
binary semaphore.
Change DEFINE_SEMAPHORE() to take a number argument and use that in the
few places that open-coded it using __SEMAPHORE_INITIALIZER().
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
[mcgrof: add some tribal knowledge about why some folks prefer
binary sempahores over mutexes]
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
In preparation for FORTIFY_SOURCE performing run-time destination buffer
bounds checking for memcpy(), specify the destination output buffer
explicitly, instead of asking memcpy() to write past the end of what looked
like a fixed-size object. Silences future run-time warning:
memcpy: detected field-spanning write (size 80) of single field "trc + 1" (size 64)
There is no binary code output differences from this change.
Link: https://lore.kernel.org/r/20220901205729.2260982-1-keescook@chromium.org
Cc: Bradley Grove <linuxdrivers@attotech.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In a number of places in esas2r_ioctl.c, the void* returned from
pci_alloc_consistent() is cast unnecessarily. Remove casts.
Issue identified with Coccinelle.
Link: https://lore.kernel.org/r/20200820181411.866057-1-alex.dewar90@gmail.com
Signed-off-by: Alex Dewar <alex.dewar90@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
sure, we'd done copy_from_user() on the same range, so we can
skip access_ok()... and it's not worth bothering. Just use
copy_to_user().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Commit 8c0d3a02c130 ("PCI: Add accessors for PCI Express Capability") added
accessors for the PCI Express Capability so that drivers didn't need to be
aware of differences between v1 and v2 of the PCI Express Capability.
Replace pci_read_config_word() and pci_write_config_word() calls with
pcie_capability_read_word() and pcie_capability_write_word().
Signed-off-by: Frederick Lawler <fred@fredlawl.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Clang warns several times in the scsi subsystem (trimmed for brevity):
drivers/scsi/hpsa.c:6209:7: warning: overflow converting case value to
switch condition type (2147762695 to 18446744071562347015) [-Wswitch]
case CCISS_GETBUSTYPES:
^
drivers/scsi/hpsa.c:6208:7: warning: overflow converting case value to
switch condition type (2147762694 to 18446744071562347014) [-Wswitch]
case CCISS_GETHEARTBEAT:
^
The root cause is that the _IOC macro can generate really large numbers,
which don't fit into type 'int', which is used for the cmd parameter in
the ioctls in scsi_host_template. My research into how GCC and Clang are
handling this at a low level didn't prove fruitful. However, looking at
the rest of the kernel tree, all ioctls use an 'unsigned int' for the
cmd parameter, which will fit all of the _IOC values in the scsi/ata
subsystems.
Make that change because none of the ioctls expect a negative value for
any command, it brings the ioctls inline with the reset of the kernel,
and it removes ambiguity, which is never good when dealing with compilers.
Link: https://github.com/ClangBuiltLinux/linux/issues/85
Link: https://github.com/ClangBuiltLinux/linux/issues/154
Link: https://github.com/ClangBuiltLinux/linux/issues/157
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Bradley Grove <bgrove@attotech.com>
Acked-by: Don Brace <don.brace@microsemi.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Trivial fix to spelling mistake in esas2r_debug message.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The semaphore 'fs_api_semaphore' is used as a simple mutex, so it should
be written as one. Semaphores are going away in the future.
Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The semaphore 'fm_api_semaphore' is used as a simple mutex, so it should
be written as one. Semaphores are going away in the future.
Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This adds the missing __printf attribute which allows compile time
format string checking (and will be used by the coming initify gcc
plugin). Additionally, this fixes the warnings exposed by the attribute.
Signed-off-by: Emese Revfy <re.emese@gmail.com>
[kees: split scsi/acpi, merged attr and fix, new commit messages]
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Check the array size *before* dereferencing it with a user provided
offset.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The patch moves an error code assigment to a 'default' case
in the previous switch statement.
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: Bradley Grove <bgrove@attotech.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Is seems strange to manipulate nvram_semaphore when in this place,
this patch fixes it.
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: Bradley Grove <bgrove@attotech.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This patch fixes an error path and rearranges error handling.
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: Bradley Grove <bgrove@attotech.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Previously the code embedded the kernel's test_bit/clear_bit
functions in wrappers that accepted u32 parameters. The
wrapper cast these parameters to longs before passing them
to the kernel's bit functions. This did not work properly
on platforms with 64-bit longs.
Signed-off-by: Bradley Grove <bgrove@attotech.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bradley Grove <bgrove@attotech.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This is a new driver for ATTO Technology's ExpressSAS series of hardware RAID
adapters. It supports the following adapters:
- ExpressSAS R60F
- ExpressSAS R680
- ExpressSAS R608
- ExpressSAS R644
Signed-off-by: Bradley Grove <bgrove@attotech.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
