To fix some checkpatch-warnings some lines of this module had to be
shortened so that they do not exceed 80 characters per line.
This refactoring makes the code more readable.
Signed-off-by: Fabian Krueger <fabian.krueger@fau.de>
Signed-off-by: Michael Scheiderer <michael.scheiderer@fau.de>
Cc: <linux-kernel@i4.cs.fau.de>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes checkpatch errors:
- spaces required around that '=' (ctx:VxV)
- space required before the open parenthesis '('
- spaces preferred around that '-' (ctx:VxV)
- space required before the open brace '{'
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Currently there are several left shifts that are assigned to 64 bit
unsigned longs where a signed int 1 is being shifted, resulting in
an integer overflow. Fix this bit using the BIT_ULL macro to perform
a 64 bit shift. Also clean up an overly long statement.
Addresses-Coverity: ("Unintentional integer overflow")
Fixes: 7dc7967fc3 ("staging: kpc2000: add initial set of Daktronics drivers")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We can get rid of a few iounmaps in the middle of the function by
re-ordering the error handling labels and adding two new labels.
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes checkpatch warning: "Consider removing the code enclosed by
this #if 0 and its #endif".
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The existing implementation for doing DMA via asynchronous IO didn't
work and there was no longer a use-case for it. Removed it.
Fixed a few checkpatch warnings about too-long lines and extraneous
braces in the process.
Reported-by: Matt Sickler <matt.sickler@daktronics.com>
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Much of the code comments in kp2000_pcie_probe just repeats the code and
does not add any additional information. Delete them and make sure that
comments still left in the function all use the same style.
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use self-explanatory label names instead of the generic numbered ones,
to make it easier to follow and understand the code.
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix sparse warnings:
drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.c:46:6: warning: symbol 'kpc_dma_del_device' was not declared. Should it be static?
drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.c:84:1: warning: symbol 'dev_attr_engine_regs' was not declared. Should it be static?
drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.c:91:14: warning: symbol 'kpc_dma_class' was not declared. Should it be static?
drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.c:199:24: warning: symbol 'kpc_dma_plat_driver_i' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes the Sparse generated warnings. Following warnings are reported by Sparse:
drivers/staging/kpc2000//kpc_dma/kpc_dma_driver.c:46:6: warning: symbol 'kpc_dma_del_device' was not declared. Should it be static?
drivers/staging/kpc2000//kpc_dma/kpc_dma_driver.c:91:14: warning: symbol 'kpc_dma_class' was not declared. Should it be static?
drivers/staging/kpc2000//kpc_dma/kpc_dma_driver.c:199:24: warning: symbol 'kpc_dma_plat_driver_i' was not declared. Should it be static?
Signed-off-by: Rishiraj Manwatkar <manwatkar@outlook.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Debug prints that are used only to inform about function entry or exit
can be removed as ftrace can be used to get this information.
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Debug prints that are used only to inform about function entry or exit
can be removed as ftrace can be used to get this information.
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Debug prints that are used only to inform about function entry or exit
can be removed as ftrace can be used to get this information.
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Debug prints that are used only to inform about function entry or exit
can be removed as ftrace can be used to get this information.
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Debug prints that are used only to inform about function entry or exit
can be removed as ftrace can be used to get this information.
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Since whitespace should not appear between asterisk and
variable name in a declaration statement, remove it and
fix checkpatch.pl error "foo * bar" should be "foo *bar".
Signed-off-by: Naoto Kobayashi <naoto.kobayashi4c@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The kpc_spi driver unnecessarily casts from a (u64 __iomem *) to a (void
*) when invoking readq and writeq which both take a (void __iomem *) arg.
There is no need for this cast, and it actually harms us by discarding
the sparse cookie, __iomem. Make the driver stop performing this casting
operation.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The kpc_spi driver stashes off an unsigned long representation of the
i/o mapping returned by devm_ioremap_nocache(). This is unnecessary, as
the only use of the unsigned long repr is to eventually be re-cast to
an (u64 __iomem *). Instead of casting the (void __iomem *) to an
(unsigned long) then a (u64 __iomem *), just remove this intermediate
step. As this intermediary is no longer used, also remove it from its
structure.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The structure kp_spi_controller_state, defined in the kpc2000_spi
driver, contains a member named chip_select which is never used after
initialization. Therefore, it should be removed for simplicity's sake.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The structure kp_spi_controller_state, defined in the kpc2000_spi
driver, contains a member named word_len which is never used after
initialization. Therefore, it should be removed for simplicity's sake.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The structure kpc_spi, defined in in the kpc2000_spi driver, contains
a member named pin_dir which is never used after initialization.
Therefore, it should be removed for simplicity's sake.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The structure kp_spi_controller_state, defined in the kpc2000_spi
driver, contains a member named phys which is never used after
initialization. Therefore, it should be removed for simplicity's sake.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In order to print a 'size_t' type the '%zu' specifier needs to be used.
Change it accordingly in order to fix the following build warning:
drivers/staging/kpc2000/kpc_dma/fileops.c:57:35: warning: format '%ld' expects argument of type 'long int', but argument 8 has type 'size_t {aka unsigned int}' [-Wformat=]
Reported-by: Build bot for Mark Brown <broonie@kernel.org>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In order to print a 'long long int' type the 'llx' specifier needs to be
used.
Change it accordingly in order to fix the following build warning:
drivers/staging/kpc2000/kpc2000/core.c:245:4: warning: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type 'long long int' [-Wformat=]
Reported-by: Build bot for Mark Brown <broonie@kernel.org>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This was reported by sparse:
drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.c:39:7: warning: symbol 'kpc_dma_add_device
' was not declared. Should it be static?
Signed-off-by: Valerio Genovese <valerio.click@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Step 11 was removed from kp2000_pcie_probe in a previous commit but the
comment was not changed to reflect this, so do it now.
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes checkpatch.pl warning "Prefer using '"%s...", __func__' to using
'<function name>', this function's name, in a string".
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes checkpatch.pl warnings "Comparison to NULL could be written [...]"
and "Comparisons should place the constant on the right side of the
test".
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The kpc_spi driver does not unmap its I/O space upon error cases in the
probe() function or upon remove(). Make the driver clean up after itself
more maintainably by migrating to using the managed resource API.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The static function kp_spi_bytes_per_word() is defined in kpc2000_spi.c,
but it is completely unused. As this function is unused, it can and
should be removed.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The kp_spi structure contains a member 'fifo_depth'. This member is
never used. Therefore, it should be removed.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The linux style guide prescribes that switch statements and their
subordinate case labels should be column-aligned rather than
double-indenting the case label. Make kpc2000_spi.c follow the desired
style with respect to switch/case alignment.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The kpc2000_spi.c file contains instances of unnecessary consecutive
newlines which negatively impact the readability of the file. Remove
all unnecessary consecutive newlines.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Now that all the card information is available via sysfs, the misc
device is no longer necessary. Removed it.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Added more read-only device attributes in order to expose all the
information about the hardware which is available by calling read() or
ioct() on the misc device associated with it.
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
"struct kp2000_regs temp" has nothing to do with temperatures, so
replace it with the more proper name "regs".
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixes checkpatch.pl error "foo __init bar" should be "foo __init bar"
and "foo __exit bar" should be "foo __exit bar".
Signed-off-by: Simon Sandström <simon@nikanor.nu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The kpc_i2c driver does not unmap its I/O space upon error cases in the
probe() function or upon remove(). Make the driver clean up after itself
more maintainably by using the managed resource API.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The kpc2000 driver does not verify whether or not mapping the I/O
space succeeded during probe time. Make the driver verify that the
mapping operation was successful before potentially using that area
in the future.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The kpc_i2c driver attempts to map its I/O space without verifying
whether or not the result of platform_get_resource() is NULL. Make the
driver check that platform_get_resource did not return NULL before
attempting to use the value returned to map an I/O space.
Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
