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Date: Thu, 17 Oct 2013 19:57:12 -0300
From: "Geyslan G. Bem" <geyslan@...il.com>
To: unlisted-recipients:; (no To-header on input)
Cc: kernel-br@...glegroups.com, "Geyslan G. Bem" <geyslan@...il.com>,
Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
Bill Pemberton <wfp5p@...ginia.edu>,
alsa-devel@...a-project.org (moderated list:SOUND),
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3] sound: pci: emu10k1: code refactoring
Partially restructures _snd_emu10k1_audigy_init_efx() and
_snd_emu10k1_init_efx() functions.
Be noted that the cast is demanded to use '__user'. So, in these cases,
avoid patches based on the coccinelle 'drop_kmalloc_cast' semantic patch.
Signed-off-by: Geyslan G. Bem <geyslan@...il.com>
---
sound/pci/emu10k1/emufx.c | 76 ++++++++++++++++++++++++++++-------------------
1 file changed, 45 insertions(+), 31 deletions(-)
diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c
index 0275209..1f9c7c4 100644
--- a/sound/pci/emu10k1/emufx.c
+++ b/sound/pci/emu10k1/emufx.c
@@ -1182,15 +1182,20 @@ static int _snd_emu10k1_audigy_init_efx(struct snd_emu10k1 *emu)
u32 *gpr_map;
mm_segment_t seg;
- if ((icode = kzalloc(sizeof(*icode), GFP_KERNEL)) == NULL ||
- (icode->gpr_map = (u_int32_t __user *)
- kcalloc(512 + 256 + 256 + 2 * 1024, sizeof(u_int32_t),
- GFP_KERNEL)) == NULL ||
- (controls = kcalloc(SND_EMU10K1_GPR_CONTROLS,
- sizeof(*controls), GFP_KERNEL)) == NULL) {
- err = -ENOMEM;
- goto __err;
- }
+ err = -ENOMEM;
+ icode = kzalloc(sizeof(*icode), GFP_KERNEL);
+ if (!icode)
+ return err;
+
+ icode->gpr_map = (u_int32_t __user *) kcalloc(512 + 256 + 256 + 2 * 1024,
+ sizeof(u_int32_t), GFP_KERNEL);
+ if (!icode->gpr_map)
+ goto __err_gpr;
+ controls = kcalloc(SND_EMU10K1_GPR_CONTROLS,
+ sizeof(*controls), GFP_KERNEL);
+ if (!controls)
+ goto __err_ctrls;
+
gpr_map = (u32 __force *)icode->gpr_map;
icode->tram_data_map = icode->gpr_map + 512;
@@ -1741,12 +1746,12 @@ A_OP(icode, &ptr, iMAC0, A_GPR(var), A_GPR(var), A_GPR(vol), A_EXTIN(input))
emu->support_tlv = 0; /* clear again */
snd_leave_user(seg);
- __err:
+__err:
kfree(controls);
- if (icode != NULL) {
- kfree((void __force *)icode->gpr_map);
- kfree(icode);
- }
+__err_ctrls:
+ kfree((void __force *)icode->gpr_map);
+__err_gpr:
+ kfree(icode);
return err;
}
@@ -1813,18 +1818,26 @@ static int _snd_emu10k1_init_efx(struct snd_emu10k1 *emu)
u32 *gpr_map;
mm_segment_t seg;
- if ((icode = kzalloc(sizeof(*icode), GFP_KERNEL)) == NULL)
- return -ENOMEM;
- if ((icode->gpr_map = (u_int32_t __user *)
- kcalloc(256 + 160 + 160 + 2 * 512, sizeof(u_int32_t),
- GFP_KERNEL)) == NULL ||
- (controls = kcalloc(SND_EMU10K1_GPR_CONTROLS,
- sizeof(struct snd_emu10k1_fx8010_control_gpr),
- GFP_KERNEL)) == NULL ||
- (ipcm = kzalloc(sizeof(*ipcm), GFP_KERNEL)) == NULL) {
- err = -ENOMEM;
- goto __err;
- }
+ err = -ENOMEM;
+ icode = kzalloc(sizeof(*icode), GFP_KERNEL);
+ if (!icode)
+ return err;
+
+ icode->gpr_map = (u_int32_t __user *) kcalloc(256 + 160 + 160 + 2 * 512,
+ sizeof(u_int32_t), GFP_KERNEL);
+ if (!icode->gpr_map)
+ goto __err_gpr;
+
+ controls = kcalloc(SND_EMU10K1_GPR_CONTROLS,
+ sizeof(struct snd_emu10k1_fx8010_control_gpr),
+ GFP_KERNEL);
+ if (!controls)
+ goto __err_ctrls;
+
+ ipcm = kzalloc(sizeof(*ipcm), GFP_KERNEL);
+ if (!ipcm)
+ goto __err_ipcm;
+
gpr_map = (u32 __force *)icode->gpr_map;
icode->tram_data_map = icode->gpr_map + 256;
@@ -2363,13 +2376,14 @@ static int _snd_emu10k1_init_efx(struct snd_emu10k1 *emu)
snd_leave_user(seg);
if (err >= 0)
err = snd_emu10k1_ipcm_poke(emu, ipcm);
- __err:
+__err:
kfree(ipcm);
+__err_ipcm:
kfree(controls);
- if (icode != NULL) {
- kfree((void __force *)icode->gpr_map);
- kfree(icode);
- }
+__err_ctrls:
+ kfree((void __force *)icode->gpr_map);
+__err_gpr:
+ kfree(icode);
return err;
}
--
1.8.4
--
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