This driver creates an abstraction for different components by casting function
pointers to slightly incompatible types for each one to get the correct
argument even when the caller does not know those types. This is a
bit unreliable and not allowed in combination with control flow integrity
(KCFI):
sound/pci/ctxfi/ctatc.c:115:25: error: cast from 'int (*)(struct hw *, struct src_mgr **)' to 'create_t' (aka 'int (*)(struct hw *, void **)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
115 | [SRC] = { .create = (create_t)src_mgr_create,
| ^~~~~~~~~~~~~~~~~~~~~~~~
sound/pci/ctxfi/ctatc.c:116:20: error: cast from 'int (*)(struct src_mgr *)' to 'destroy_t' (aka 'int (*)(void *)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
116 | .destroy = (destroy_t)src_mgr_destroy },
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
sound/pci/ctxfi/ctatc.c:117:27: error: cast from 'int (*)(struct hw *, struct srcimp_mgr **)' to 'create_t' (aka 'int (*)(struct hw *, void **)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
117 | [SRCIMP] = { .create = (create_t)srcimp_mgr_create,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
sound/pci/ctxfi/ctatc.c:118:20: error: cast from 'int (*)(struct srcimp_mgr *)' to 'destroy_t' (aka 'int (*)(void *)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
118 | .destroy = (destroy_t)srcimp_mgr_destroy },
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Change these to always pass void pointers and move the abstraction one level
down.
Fixes: 8cc7236148 ("ALSA: SB X-Fi driver merge")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20240213101303.460008-1-arnd@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The master and next_conj of rcs_ops are used for iterating the
resource list entries, and currently those are supposed to return the
current value. The problem is that next_conf may go over the last
entry before the loop abort condition is evaluated, and it may return
the "current" value that is beyond the array size. It was caught
recently as a GPF, for example.
Those return values are, however, never actually evaluated, hence
basically we don't have to consider the current value as the return at
all. By dropping those return values, the potential out-of-range
access above is also fixed automatically.
This patch changes the return type of master and next_conj callbacks
to void and drop the superfluous code accordingly.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=214985
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20211118215729.26257-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The opening comment mark '/**' is used for highlighting the beginning of
kernel-doc comments.
There are files in sound/pci/ctxfi which follow this syntax in their file
headers, i.e. start with '/**' like comments, which causes unexpected
warnings from kernel-doc.
E.g., running scripts/kernel-doc -none on sound/pci/ctxfi/ctresource.c
causes this warning:
"warning: wrong kernel-doc identifier on line:
* Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved."
Similarly for other files too.
Provide a simple fix by replacing the kernel-doc like comment syntax with
general format, i.e. "/*", to prevent kernel-doc from parsing it.
Signed-off-by: Aditya Srivastava <yashsri421@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20210317203932.23993-1-yashsri421@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Based on 1 normalized pattern(s):
this source file is released under gpl v2 license no other versions
see the copying file included in the main directory of this source
distribution for the license terms and conditions
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 28 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531081035.780831265@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kfree on NULL pointer is a no-op and therefore checking is redundant.
Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The various rsc ops structures are never modified, so declare them as
const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
pr_* macros replaced with dev_* as they are more preffered over pr_*.
each file which had pr_* was reviewed manually and replaced with dev_*.
here we have actually used the various snd_card which was added to some
structures of ctxfi via a previous patch of this series.
in the ctvmem.c file we have passed a reference of ct_atc as an
argument to get_vm_block function so that it can be used from
dev_*.
since dev_* will print the device information , so the prefix of
"ctxfi" from the various pr_* were also removed.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
initialized the reference of snd_card which was added to the various
structures through the previous patch of the series.
these references of snd_card will be used in a later patch to convert
the pr_* macros to dev_*
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
the previous patch of the series has converted the void * to
struct hw * . Now this patch removes the typecasting to (struct hw *)
which is not needed any more.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
in the code we have void *hw and while using we are always typecasting
it to (struct hw *). it is better to use void type of pointer when we
store different types of pointer , but in this code we are only having
struct hw.
So changed all the relevant reference of void *hw to struct hw *hw,
without any modification of the existing code logic.
the next patch of the series will remove the typecasting which is
not required now.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
as pr_* macros are more preffered over printk, so printk replaced with corresponding pr_err and pr_alert
this patch will generate a warning from checkpatch for an unnecessary space before new line and has not been fixed as this patch is only for printk replacement.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The advantage of kcalloc is, that will prevent integer overflows which could
result from the multiplication of number of elements and size and it is also
a bit nicer to read.
The semantic patch that makes this change is available
in https://lkml.org/lkml/2011/11/25/107
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
There are references in the code to 256 sources, so I tested it with 256 aplays,
of which the first and last with real data and the rest playing /dev/zero .
Also increase amount of page tables, so the default aplay size works.
Signed-off-by: Maarten Lankhorst <m.b.lankhorst@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Fix a few uninitialized error checks that were introduced recently
mistakenlly during the clean-up:
sound/pci/ctxfi/ctamixer.c: In function ‘get_amixer_rsc’:
sound/pci/ctxfi/ctamixer.c:261: warning: ‘err’ may be used uninitialized in this function
sound/pci/ctxfi/ctamixer.c: In function ‘get_sum_rsc’:
sound/pci/ctxfi/ctamixer.c:415: warning: ‘err’ may be used uninitialized in this function
sound/pci/ctxfi/ctsrc.c: In function ‘get_srcimp_rsc’:
sound/pci/ctxfi/ctsrc.c:742: warning: ‘err’ may be used uninitialized in this function
Signed-off-by: Takashi Iwai <tiwai@suse.de>
