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| author | Eliot Blennerhassett <eliot@blennerhassett.gen.nz> | 2014-11-20 06:22:57 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2014-11-23 00:34:06 +0300 |
| commit | 51e6f47dd2e3463dac6f37128fd7b7cb40c500de (patch) | |
| tree | bd73a95f036a7b14f4b8f8e61e69a044bcd6ac14 /sound/pci | |
| parent | dc612838eac746b11bb4e5d923dafeea0ba7e81b (diff) | |
| download | linux-51e6f47dd2e3463dac6f37128fd7b7cb40c500de.tar.xz | |
ALSA: asihpi: used parts of message/response are zeroed before use
Signed-off-by: Eliot Blennerhassett <eliot@blennerhassett.gen.nz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/asihpi/hpimsginit.c | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/sound/pci/asihpi/hpimsginit.c b/sound/pci/asihpi/hpimsginit.c index 032d563e3708..7eb617175fde 100644 --- a/sound/pci/asihpi/hpimsginit.c +++ b/sound/pci/asihpi/hpimsginit.c @@ -1,7 +1,7 @@ /****************************************************************************** AudioScience HPI driver - Copyright (C) 1997-2011 AudioScience Inc. <support@audioscience.com> + Copyright (C) 1997-2014 AudioScience Inc. <support@audioscience.com> This program is free software; you can redistribute it and/or modify it under the terms of version 2 of the GNU General Public License as @@ -37,11 +37,15 @@ static u16 gwSSX2_bypass; static void hpi_init_message(struct hpi_message *phm, u16 object, u16 function) { - memset(phm, 0, sizeof(*phm)); + u16 size; + if ((object > 0) && (object <= HPI_OBJ_MAXINDEX)) - phm->size = msg_size[object]; + size = msg_size[object]; else - phm->size = sizeof(*phm); + size = sizeof(*phm); + + memset(phm, 0, size); + phm->size = size; if (gwSSX2_bypass) phm->type = HPI_TYPE_SSX2BYPASS_MESSAGE; @@ -60,12 +64,16 @@ static void hpi_init_message(struct hpi_message *phm, u16 object, void hpi_init_response(struct hpi_response *phr, u16 object, u16 function, u16 error) { - memset(phr, 0, sizeof(*phr)); - phr->type = HPI_TYPE_RESPONSE; + u16 size; + if ((object > 0) && (object <= HPI_OBJ_MAXINDEX)) - phr->size = res_size[object]; + size = res_size[object]; else - phr->size = sizeof(*phr); + size = sizeof(*phr); + + memset(phr, 0, sizeof(*phr)); + phr->size = size; + phr->type = HPI_TYPE_RESPONSE; phr->object = object; phr->function = function; phr->error = error; @@ -86,7 +94,7 @@ void hpi_init_message_response(struct hpi_message *phm, static void hpi_init_messageV1(struct hpi_message_header *phm, u16 size, u16 object, u16 function) { - memset(phm, 0, sizeof(*phm)); + memset(phm, 0, size); if ((object > 0) && (object <= HPI_OBJ_MAXINDEX)) { phm->size = size; phm->type = HPI_TYPE_REQUEST; @@ -100,7 +108,9 @@ static void hpi_init_messageV1(struct hpi_message_header *phm, u16 size, void hpi_init_responseV1(struct hpi_response_header *phr, u16 size, u16 object, u16 function) { - memset(phr, 0, sizeof(*phr)); + (void)object; + (void)function; + memset(phr, 0, size); phr->size = size; phr->version = 1; phr->type = HPI_TYPE_RESPONSE; |