ALSA: es1688 - freeup resources on init failure

This will fix the following oops:

[    6.169981] genirq: Flags mismatch irq 5. 00000000 (ES1688) vs. 00000000 (ES1688)
[    6.170851] Pid: 1, comm: swapper Not tainted 3.5.0-00004-gceee0e9 #14
[    6.170851] Call Trace:
[    6.170851]  [<c1062237>] ? __setup_irq+0x3c7/0x420
[    6.170851]  [<c1062486>] ? request_threaded_irq+0x76/0x140
[    6.170851]  [<c1290220>] ? snd_es1688_ioctl+0x10/0x10
[    6.170851]  [<c10624c2>] ? request_threaded_irq+0xb2/0x140
[    6.170851]  [<c1291196>] ? snd_es1688_create+0x96/0x330
[    6.170851]  [<c138365d>] ? snd_gusextreme_probe+0x18d/0x5a2
[    6.170851]  [<c11c9d80>] ? __driver_attach+0x80/0x80
[    6.170851]  [<c10db22f>] ? sysfs_create_link+0xf/0x20
[    6.170851]  [<c11c9d80>] ? __driver_attach+0x80/0x80
[    6.170851]  [<c11d1502>] ? isa_bus_probe+0x12/0x20
[    6.170851]  [<c11c9b95>] ? driver_probe_device+0x55/0x1c0
[    6.170851]  [<c13ae04f>] ? _raw_spin_unlock+0xf/0x30
[    6.170851]  [<c13705ea>] ? klist_next+0x6a/0xe0
[    6.170851]  [<c11d15c1>] ? isa_bus_match+0x21/0x40
[    6.170851]  [<c11c8a24>] ? bus_for_each_drv+0x34/0x70
[    6.170851]  [<c11c9e4b>] ? device_attach+0x7b/0x90
[    6.170851]  [<c11c9d80>] ? __driver_attach+0x80/0x80
[    6.170851]  [<c11c8bff>] ? bus_probe_device+0x5f/0x80
[    6.170851]  [<c11c7493>] ? device_add+0x573/0x620
[    6.170851]  [<c1042820>] ? complete_all+0x40/0x60
[    6.170851]  [<c13ae08a>] ? _raw_spin_unlock_irqrestore+0x1a/0x30
[    6.170851]  [<c11d16c6>] ? isa_register_driver+0xb6/0x150
[    6.170851]  [<c15c9002>] ? alsa_card_gusmax_init+0xf/0xf
[    6.170851]  [<c15a99bc>] ? do_one_initcall+0x7f/0x12b
[    6.170851]  [<c15a9b7a>] ? kernel_init+0x112/0x1a9
[    6.170851]  [<c15a9423>] ? do_early_param+0x77/0x77
[    6.170851]  [<c15a9a68>] ? do_one_initcall+0x12b/0x12b
[    6.170851]  [<c13aefbe>] ? kernel_thread_helper+0x6/0xd
[    6.190170] es1688: can't grab IRQ 5
[    6.190613] genirq: Flags mismatch irq 5. 00000000 (ES1688) vs. 00000000 (ES1688)
[    6.191566] Pid: 1, comm: swapper Not tainted 3.5.0-00004-gceee0e9 #14
[    6.192394] Call Trace:
[    6.192685]  [<c1062237>] ? __setup_irq+0x3c7/0x420
[    6.193342]  [<c1062486>] ? request_threaded_irq+0x76/0x140
[    6.194081]  [<c1290220>] ? snd_es1688_ioctl+0x10/0x10
[    6.194607]  [<c10624c2>] ? request_threaded_irq+0xb2/0x140
[    6.194607]  [<c1291196>] ? snd_es1688_create+0x96/0x330
[    6.194607]  [<c138365d>] ? snd_gusextreme_probe+0x18d/0x5a2
[    6.194607]  [<c11c9d80>] ? __driver_attach+0x80/0x80
[    6.194607]  [<c10db22f>] ? sysfs_create_link+0xf/0x20
[    6.194607]  [<c11c9d80>] ? __driver_attach+0x80/0x80
[    6.194607]  [<c11d1502>] ? isa_bus_probe+0x12/0x20
[    6.194607]  [<c11c9b95>] ? driver_probe_device+0x55/0x1c0
[    6.194607]  [<c13ae04f>] ? _raw_spin_unlock+0xf/0x30
[    6.194607]  [<c13705ea>] ? klist_next+0x6a/0xe0
[    6.194607]  [<c11d15c1>] ? isa_bus_match+0x21/0x40
[    6.194607]  [<c11c8a24>] ? bus_for_each_drv+0x34/0x70
[    6.194607]  [<c11c9e4b>] ? device_attach+0x7b/0x90
[    6.194607]  [<c11c9d80>] ? __driver_attach+0x80/0x80
[    6.194607]  [<c11c8bff>] ? bus_probe_device+0x5f/0x80
[    6.194607]  [<c11c7493>] ? device_add+0x573/0x620
[    6.194607]  [<c1042820>] ? complete_all+0x40/0x60
[    6.194607]  [<c13ae08a>] ? _raw_spin_unlock_irqrestore+0x1a/0x30
[    6.194607]  [<c11d16c6>] ? isa_register_driver+0xb6/0x150
[    6.194607]  [<c15c9002>] ? alsa_card_gusmax_init+0xf/0xf
[    6.194607]  [<c15a99bc>] ? do_one_initcall+0x7f/0x12b
[    6.194607]  [<c15a9b7a>] ? kernel_init+0x112/0x1a9
[    6.194607]  [<c15a9423>] ? do_early_param+0x77/0x77
[    6.194607]  [<c15a9a68>] ? do_one_initcall+0x12b/0x12b
[    6.194607]  [<c13aefbe>] ? kernel_thread_helper+0x6/0xd
[    6.210779] es1688: can't grab IRQ 5
[    6.211305] gusextreme: probe of gusextreme.0 failed with error -16

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/include/sound/es1688.h b/include/sound/es1688.h
index 3ec7ecb..f752dd3 100644 (file)
--- a/include/sound/es1688.h
+++ b/include/sound/es1688.h
@@ -29,6 +29,7 @@
 #define ES1688_HW_AUTO         0x0000
 #define ES1688_HW_688          0x0001
 #define ES1688_HW_1688         0x0002
+#define ES1688_HW_UNDEF        0x0003
 
 struct snd_es1688 {
        unsigned long port;             /* port of ESS chip */

diff --git a/sound/isa/es1688/es1688_lib.c b/sound/isa/es1688/es1688_lib.c
index 1d47be8..b3b4f15 100644 (file)
--- a/sound/isa/es1688/es1688_lib.c
+++ b/sound/isa/es1688/es1688_lib.c
@@ -612,10 +612,10 @@ static int snd_es1688_capture_close(struct snd_pcm_substream *substream)
 
 static int snd_es1688_free(struct snd_es1688 *chip)
 {
-       if (chip->res_port) {
+       if (chip->hardware != ES1688_HW_UNDEF)
                snd_es1688_init(chip, 0);
+       if (chip->res_port)
                release_and_free_resource(chip->res_port);
-       }
        if (chip->irq >= 0)
                free_irq(chip->irq, (void *) chip);
        if (chip->dma8 >= 0) {
@@ -657,19 +657,27 @@ int snd_es1688_create(struct snd_card *card,
                return -ENOMEM;
        chip->irq = -1;
        chip->dma8 = -1;
+       chip->hardware = ES1688_HW_UNDEF;
        
-       if ((chip->res_port = request_region(port + 4, 12, "ES1688")) == NULL) {
+       chip->res_port = request_region(port + 4, 12, "ES1688");
+       if (chip->res_port == NULL) {
                snd_printk(KERN_ERR "es1688: can't grab port 0x%lx\n", port + 4);
-               return -EBUSY;
+               err = -EBUSY;
+               goto exit;
        }
-       if (request_irq(irq, snd_es1688_interrupt, 0, "ES1688", (void *) chip)) {
+
+       err = request_irq(irq, snd_es1688_interrupt, 0, "ES1688", (void *) chip);
+       if (err < 0) {
                snd_printk(KERN_ERR "es1688: can't grab IRQ %d\n", irq);
-               return -EBUSY;
+               goto exit;
        }
+
        chip->irq = irq;
-       if (request_dma(dma8, "ES1688")) {
+       err = request_dma(dma8, "ES1688");
+
+       if (err < 0) {
                snd_printk(KERN_ERR "es1688: can't grab DMA8 %d\n", dma8);
-               return -EBUSY;
+               goto exit;
        }
        chip->dma8 = dma8;
 
@@ -685,14 +693,18 @@ int snd_es1688_create(struct snd_card *card,
 
        err = snd_es1688_probe(chip);
        if (err < 0)
-               return err;
+               goto exit;
 
        err = snd_es1688_init(chip, 1);
        if (err < 0)
-               return err;
+               goto exit;
 
        /* Register device */
-       return snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+       err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
+exit:
+       if (err)
+               snd_es1688_free(chip);
+       return err;
 }
 
 static struct snd_pcm_ops snd_es1688_playback_ops = {