Members of nbu2ss_udc structure can change device state, maintain
completion state and control driver. Also provide access to read and
write to register. Hence, exclusive access to nbu2ss_udc is required.
The lock variable of type spinlock_t guarantees the exclusive access
and protects it.
In this patch, comment is added for spinlock_t definition, to fix the
following checkpatch issue:
CHECK: spinlock_t definition without comment
Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Changes from CamelCase to a kernel format
Signed-off-by: Afonso Bordado <afonsobordado@az8.co>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The new name complies with the kernel styling guidelines and is more descriptive.
Signed-off-by: Afonso Bordado <afonsobordado@az8.co>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change EP0_out_PIO to use the kernel convention.
Signed-off-by: Afonso Bordado <afonsobordado@az8.co>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The probe function is not marked __init, but some other functions
are. This leads to a warning on older compilers (e.g. gcc-4.3),
and can cause executing freed memory when built with those
compilers:
WARNING: drivers/staging/emxx_udc/emxx_udc.o(.text+0x2d78): Section mismatch in reference from the function nbu2ss_drv_probe() to the function .init.text:nbu2ss_drv_contest_init()
This removes the annotations.
Fixes: 33aa8d45a4 ("staging: emxx_udc: Add Emma Mobile USB Gadget driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make suggested checkpatch modification for
CHECK: Alignment should match open parenthesis
Signed-off-by: Walt Feasel <waltfeasel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make suggested checkpatch modification for
CHECK: spaces preferred around that '|'
Signed-off-by: Walt Feasel <waltfeasel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make suggested checkpatch modification for
WARNING: braces {} are not necessary for single
statement blocks
Signed-off-by: Walt Feasel <waltfeasel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make suggested checkpatch modification for
CHECK: Logical continuations should be on the
previous line
Signed-off-by: Walt Feasel <waltfeasel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Make suggested checkpatch modification for
CHECK: Blank lines aren't necessary after an
open brace '{'
Signed-off-by: Walt Feasel <waltfeasel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch compresses two lines into a single line
if immediate return statement is found. Remove variable data as
it is no longer needed.
It is done using script Coccinelle. And coccinelle uses the following
semantic patch for this compression function
@@
local idexpression ret;
expression e;
@@
-ret =
+return
e;
-return ret;
Signed-off-by: Nadim Almas <nadim.902@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Declare the structure usb_ep_ops as constant as it is only stored in the
ops field of a usb_ep structure which is a field of a nbu2ss_ep structure.
The ops field is of type const struct usb_ep_ops *, so usb_ep_ops
structures having this property can be decalared as const.
Done using coccinelle:
@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct usb_ep_ops i@p = {...};
@ok1@
identifier r1.i;
position p;
struct nbu2ss_ep s;
@@
s.ep.ops=&i@p
@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
static
+const
struct usb_ep_ops i={...};
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct usb_ep_ops i;
File size before:
text data bss dec hex filename
16007 376 3720 20103 4e87
drivers/staging/emxx_udc/emxx_udc.o
File size after:
text data bss dec hex filename
16095 280 3720 20095 4e7f
drivers/staging/emxx_udc/emxx_udc.o
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Some type conversions like casting a pointer to a pointer of same type,
casting to the original type using addressof(&) operator etc. are not
needed. Therefore, remove them. Done using coccinelle:
@@
type t;
t *p;
t a;
@@
(
- (t)(a)
+ a
|
- (t *)(p)
+ p
|
- (t *)(&a)
+ &a
)
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
add braces to if/else clause to fix the checkpatch issue braces {}
should be used on all arms of if/else block. Does not affect flow
because only single statement inside if/else block.
Signed-off-by: Gargi Sharma <gs051095@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is a patch to fixes up a
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
found by the checkpatch.pl tool
Signed-off-by: Anchal Jain <anchalj109@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes the checkpatch.pl warning:
Blank lines aren't necessary before a close brace '}'
Signed-off-by: Rehas Sachdeva <aquannie@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A change to the usb gadget core allowed certain API functions to be
part of a loadable module, which breaks having emxx_udc built-in:
drivers/staging/built-in.o: In function `nbu2ss_drv_probe':
(.text+0x2428): undefined reference to `usb_ep_set_maxpacket_limit'
The original patch already fixed tons of other cases that have the
added dependency but apparently missed this one that now appears
in an ARM allmodconfig build.
This patch makes the symbol "tristate", which lets the Kconfig
dependency tracking handle it correctly. To make the module
actually usable, I also revert 0af61e66ee ("drivers/staging:
make emxx_udc.c explicitly non-modular"), which Paul Gortmaker
added after noticing that the Kconfig symbol was 'bool'.
Compared to the original version however, I leave out the
'__exit' annotation on the remove callback, as Paul pointed
out that this was incorrect.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 5a8d651a2b ("usb: gadget: move gadget API functions to udc-core")
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fixed checkpatch.pl warning about 'Prefer 'unsigned int' to bare use of
'unsigned'
Signed-off-by: Shyam Saini <mayhs11saini@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add space around operator.This patch is found by checkpatch.pl script.
Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add space around operator '-'. Problem found using checkpatch.pl
CHECK: spaces preferred around that '-' (ctx:VxV)
Signed-off-by: Dilek Uzulmez <dilekuzulmez@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Remove parentheses around the right hand side of assignments as they are
not needed. Semantic patch used:
@@
expression a, b, c;
@@
(
a = (b == c)
|
a =
- (
b
- )
)
Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Allignment matched to the open parenthesis to avoid the
check detected by the checkpatch.pl.
CHECK: Alignment should match open parenthesis
Signed-off-by: Anjali Menon <cse.anjalimenon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ARCH_SHMOBILE is coming to arm64, which creates new warnings in allmodconfig:
drivers/staging/emxx_udc/emxx_udc.c: In function '_nbu2ss_out_dma':
drivers/staging/emxx_udc/emxx_udc.c:843:45: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
_nbu2ss_writel(&preg->EP_DCR[num].EP_TADR, (u32)pBuffer);
This is clearly a mistake from confusing a dma_addr_t with a pointer,
so the fix is to use the correct types in two places.
The third warning of this kind is a check for an unaligned pointer,
which should be done by casting the pointer to uintptr_t, not int.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add a space around '>>' operator.
Problem found using checkpatch.
Signed-off-by: Navya Sri Nizamkari <navyasri.tech@gmail.com>
Reviewed-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Boolean tests do not need explicit comparison to true or false.
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The Kconfig currently controlling compilation of this code is:
drivers/staging/emxx_udc/Kconfig:config USB_EMXX
drivers/staging/emxx_udc/Kconfig: bool "EMXX USB Function Device Controller"
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
The .remove function was declared __exit, so it wouldn't have been
available for a sysfs bind/unbind anyway, so lets be explicit here and
use ".suppress_bind_attrs = true" to prevent root from doing something
silly.
We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.
Cc: Vincenzo Scotti <vinc94@gmail.com>
Cc: Haneen Mohammed <hamohammed.sa@gmail.com>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Roberta Dobrescu <roberta.dobrescu@gmail.com>
Cc: Tapasweni Pathak <tapaswenipathak@gmail.com>
Cc: Peter Chen <peter.chen@freescale.com>
Cc: Robert Baldyga <r.baldyga@samsung.com>
Cc: Chris Rorvick <chris@rorvick.com>
Cc: "Gujulan Elango, Hari Prasath (H.)" <hgujulan@visteon.com>
Cc: devel@driverdev.osuosl.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fixed 'Comparisons should place the constant on the right side of the
test' Warnings
Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
struct nbu2ss_ep *ep parameter in functions _nbu2ss_ep0_in_transfer()
and _nbu2ss_ep0_out_transfer() is not used anywhere inside. Hence,
removed.
Signed-off-by: Ravi Teja Darbha <ravi2j@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The cleanup1 label does nothing but return. Better way is to return
immediately instead of using goto. Hence, removed.
Signed-off-by: Ravi Teja Darbha <ravi2j@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
FSF mailing address is no longer required to be specified. Hence
removed.
Signed-off-by: Ravi Teja Darbha <ravi2j@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Convert endpoint configuration to new capabilities model.
Fixed typo in "epc-nulk" to "epc-bulk".
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Since maxpacket_limit was introduced all UDC drivers should use
usb_ep_set_maxpacket_limit() function instead of setting maxpacket value
manually. ep.maxpacket_limit contains actual maximum maxpacket value
supported by hardware which is needed by epautoconf.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch removes few lines of commented code.
Signed-off-by: Hari Prasath Gujulan Elango <hgujulan@visteon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes a stray semicolon around closing brace of an if code
block.
Signed-off-by: Hari Prasath Gujulan Elango <hgujulan@visteon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Put NULL test on the result of the previous call instead on one of its
arguments. A simplified version of the semantic match that finds this
problem is as follows (http://coccinelle.lip6.fr/):
// <smpl>
r@
expression *e1;
expression *e2;
identifier f;
statement S1,S2;
@@
e1 = f(...,e2,...);
(
if (e1 == NULL || ...) S1 else S2
|
*if (e2 == NULL || ...) S1 else S2
)
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
dev_* is prefered over pr_* when appropriate dev structure is present.
This patch replace pr_info and pr_warn with its dev_ counterpart.
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Code using doubly linked list is iterated generally using list_empty and
list_entry functions, but it can be better written using list_for_each_entry
macro.
This patch replaces the while loop containing list_empty and list_entry with
list_for_each_entry and list_for_each_entry_safe. list_for_each_entry is a
macro which is used to iterate over a list of given type. So while loop used to
iterate over a list can be replaced with list_for_each_entry macro. However, if
list_del is used in the loop, then list_for_each_entry_safe is a better choice.
This transformation is done by using the following coccinelle script.
@ rule1 @
expression E1;
identifier I1, I2;
type T;
iterator name list_for_each_entry;
@@
- while (list_empty(&E1) == 0)
+ list_for_each_entry (I1, &E1, I2)
{
...when != T *I1;
- I1 = list_entry(E1.next, T, I2);
...when != list_del(...);
when != list_del_init(...);
}
@ rule2 @
expression E1;
identifier I1, I2;
type T;
iterator name list_for_each_entry_safe;
@@
T *I1;
+ T *tmp;
...
- while (list_empty(&E1) == 0)
+ list_for_each_entry_safe (I1, tmp, &E1, I2)
{
...when != T *I1;
- I1 = list_entry(E1.next, T, I2);
...
}
Signed-off-by: Somya Anand <somyaanand214@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes custom printk macro ERR.
All the calls to this macro were replaced by de_err and pr_err.
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes the use of custom printk macros ERR and replace it
with dev_err, or pr_err in the following cases:
- if no appropriate struct device *dev field where found for dev_err.
- or dev could be null eg. "dev_err(udc->dev" not possible inside "if
(udc == null)"
Issue addressed by checkpatch.pl.
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch removes the test statement for an argument to _nbu2ss_pullup
function, for it can't be null due to previous derefrences.
Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Varsha Rao
Afonso Bordado
Arnd Bergmann
Walt Feasel
Nadim Almas
Bhumika Goyal
Gargi Sharma
Anchal Jain
Rehas Sachdeva
Anson Jacob
Shyam Saini
Sandhya Bankar
Dilek Uzulmez
Amitoj Kaur Chawla
Janani Ravichandran
Anjali Menon
Geliang Tang
Navya Sri Nizamkari
Luis de Bethencourt
Paul Gortmaker
Cristina Moraru
Ravi Teja Darbha
Robert Baldyga
Hari Prasath Gujulan Elango
Madhusudhanan Ravindran
Carlos E. Garcia
Julia Lawall
Haneen Mohammed
Somya Anand