usb: musb: remove hand-crafted id handling
This replaced the handcrafted id handling by the PLATFORM_DEVID_AUTO
value which should do the same thing.
This patch probably also fixes ux500 because I did not find the "musbid"
variable to remove. And we close a tiny-unlikely race window becuase the
old code gave the id back before device was destroyed in the remove
case.
[ balbi@ti.com : fixed up two failed hunks when applying patch ]
Cc: B, Ravi <ravibabu@ti.com>
Cc: Santhapuri, Damodar <damodar.santhapuri@ti.com>
Cc: Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com>
Cc: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c
index fdfd779c..3ff30b9 100644
--- a/drivers/usb/musb/am35x.c
+++ b/drivers/usb/musb/am35x.c
@@ -459,7 +459,6 @@
struct clk *clk;
int ret = -ENOMEM;
- int musbid;
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
if (!glue) {
@@ -467,18 +466,10 @@
goto err0;
}
- /* get the musb id */
- musbid = musb_get_id(&pdev->dev, GFP_KERNEL);
- if (musbid < 0) {
- dev_err(&pdev->dev, "failed to allocate musb id\n");
- ret = -ENOMEM;
- goto err1;
- }
-
- musb = platform_device_alloc("musb-hdrc", musbid);
+ musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
if (!musb) {
dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err2;
+ goto err1;
}
phy_clk = clk_get(&pdev->dev, "fck");
@@ -507,7 +498,6 @@
goto err6;
}
- musb->id = musbid;
musb->dev.parent = &pdev->dev;
musb->dev.dma_mask = &am35x_dmamask;
musb->dev.coherent_dma_mask = am35x_dmamask;
@@ -557,9 +547,6 @@
err3:
platform_device_put(musb);
-err2:
- musb_put_id(&pdev->dev, musbid);
-
err1:
kfree(glue);
@@ -571,7 +558,6 @@
{
struct am35x_glue *glue = platform_get_drvdata(pdev);
- musb_put_id(&pdev->dev, glue->musb->id);
platform_device_unregister(glue->musb);
clk_disable(glue->clk);
clk_disable(glue->phy_clk);
diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c
index 307e726..7e4d60a 100644
--- a/drivers/usb/musb/blackfin.c
+++ b/drivers/usb/musb/blackfin.c
@@ -455,7 +455,6 @@
struct bfin_glue *glue;
int ret = -ENOMEM;
- int musbid;
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
if (!glue) {
@@ -463,21 +462,12 @@
goto err0;
}
- /* get the musb id */
- musbid = musb_get_id(&pdev->dev, GFP_KERNEL);
- if (musbid < 0) {
- dev_err(&pdev->dev, "failed to allocate musb id\n");
- ret = -ENOMEM;
+ musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
+ if (!musb) {
+ dev_err(&pdev->dev, "failed to allocate musb device\n");
goto err1;
}
- musb = platform_device_alloc("musb-hdrc", musbid);
- if (!musb) {
- dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err2;
- }
-
- musb->id = musbid;
musb->dev.parent = &pdev->dev;
musb->dev.dma_mask = &bfin_dmamask;
musb->dev.coherent_dma_mask = bfin_dmamask;
@@ -513,9 +503,6 @@
err3:
platform_device_put(musb);
-err2:
- musb_put_id(&pdev->dev, musbid);
-
err1:
kfree(glue);
@@ -527,7 +514,6 @@
{
struct bfin_glue *glue = platform_get_drvdata(pdev);
- musb_put_id(&pdev->dev, glue->musb->id);
platform_device_unregister(glue->musb);
kfree(glue);
diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c
index e94f556..67b8ae7 100644
--- a/drivers/usb/musb/da8xx.c
+++ b/drivers/usb/musb/da8xx.c
@@ -480,7 +480,6 @@
struct clk *clk;
int ret = -ENOMEM;
- int musbid;
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
if (!glue) {
@@ -488,18 +487,10 @@
goto err0;
}
- /* get the musb id */
- musbid = musb_get_id(&pdev->dev, GFP_KERNEL);
- if (musbid < 0) {
- dev_err(&pdev->dev, "failed to allocate musb id\n");
- ret = -ENOMEM;
- goto err1;
- }
-
- musb = platform_device_alloc("musb-hdrc", musbid);
+ musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
if (!musb) {
dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err2;
+ goto err1;
}
clk = clk_get(&pdev->dev, "usb20");
@@ -515,7 +506,6 @@
goto err4;
}
- musb->id = musbid;
musb->dev.parent = &pdev->dev;
musb->dev.dma_mask = &da8xx_dmamask;
musb->dev.coherent_dma_mask = da8xx_dmamask;
@@ -558,9 +548,6 @@
err3:
platform_device_put(musb);
-err2:
- musb_put_id(&pdev->dev, musbid);
-
err1:
kfree(glue);
@@ -572,7 +559,6 @@
{
struct da8xx_glue *glue = platform_get_drvdata(pdev);
- musb_put_id(&pdev->dev, glue->musb->id);
platform_device_unregister(glue->musb);
clk_disable(glue->clk);
clk_put(glue->clk);
diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index 959a6d7..b3c0a94 100644
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -512,7 +512,6 @@
struct clk *clk;
int ret = -ENOMEM;
- int musbid;
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
if (!glue) {
@@ -520,18 +519,10 @@
goto err0;
}
- /* get the musb id */
- musbid = musb_get_id(&pdev->dev, GFP_KERNEL);
- if (musbid < 0) {
- dev_err(&pdev->dev, "failed to allocate musb id\n");
- ret = -ENOMEM;
- goto err1;
- }
-
- musb = platform_device_alloc("musb-hdrc", musbid);
+ musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
if (!musb) {
dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err2;
+ goto err1;
}
clk = clk_get(&pdev->dev, "usb");
@@ -547,7 +538,6 @@
goto err4;
}
- musb->id = musbid;
musb->dev.parent = &pdev->dev;
musb->dev.dma_mask = &davinci_dmamask;
musb->dev.coherent_dma_mask = davinci_dmamask;
@@ -590,9 +580,6 @@
err3:
platform_device_put(musb);
-err2:
- musb_put_id(&pdev->dev, musbid);
-
err1:
kfree(glue);
@@ -604,7 +591,6 @@
{
struct davinci_glue *glue = platform_get_drvdata(pdev);
- musb_put_id(&pdev->dev, glue->musb->id);
platform_device_unregister(glue->musb);
clk_disable(glue->clk);
clk_put(glue->clk);
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 25a0d8e..78037bf 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -116,7 +116,6 @@
#define MUSB_DRIVER_NAME "musb-hdrc"
const char musb_driver_name[] = MUSB_DRIVER_NAME;
-static DEFINE_IDA(musb_ida);
MODULE_DESCRIPTION(DRIVER_INFO);
MODULE_AUTHOR(DRIVER_AUTHOR);
@@ -133,35 +132,6 @@
/*-------------------------------------------------------------------------*/
-int musb_get_id(struct device *dev, gfp_t gfp_mask)
-{
- int ret;
- int id;
-
- ret = ida_pre_get(&musb_ida, gfp_mask);
- if (!ret) {
- dev_err(dev, "failed to reserve resource for id\n");
- return -ENOMEM;
- }
-
- ret = ida_get_new(&musb_ida, &id);
- if (ret < 0) {
- dev_err(dev, "failed to allocate a new id\n");
- return ret;
- }
-
- return id;
-}
-EXPORT_SYMBOL_GPL(musb_get_id);
-
-void musb_put_id(struct device *dev, int id)
-{
-
- dev_dbg(dev, "removing id %d\n", id);
- ida_remove(&musb_ida, id);
-}
-EXPORT_SYMBOL_GPL(musb_put_id);
-
#ifndef CONFIG_BLACKFIN
static int musb_ulpi_read(struct usb_phy *phy, u32 offset)
{
diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index 0cef3ce..7fb4819 100644
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -522,8 +522,6 @@
extern void musb_start(struct musb *musb);
extern void musb_stop(struct musb *musb);
-extern int musb_get_id(struct device *dev, gfp_t gfp_mask);
-extern void musb_put_id(struct device *dev, int id);
extern void musb_write_fifo(struct musb_hw_ep *ep, u16 len, const u8 *src);
extern void musb_read_fifo(struct musb_hw_ep *ep, u16 len, u8 *dst);
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 828d2a2..2d2cd37 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -459,7 +459,7 @@
struct resource *res;
struct resource resources[2];
char res_name[10];
- int ret, musbid;
+ int ret;
/* get memory resource */
sprintf(res_name, "musb%d", id);
@@ -484,22 +484,14 @@
resources[1] = *res;
resources[1].name = "mc";
- /* get the musb id */
- musbid = musb_get_id(dev, GFP_KERNEL);
- if (musbid < 0) {
- dev_err(dev, "failed to allocate musb id\n");
- ret = -ENOMEM;
- goto err0;
- }
/* allocate the child platform device */
- musb = platform_device_alloc("musb-hdrc", musbid);
+ musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
if (!musb) {
dev_err(dev, "failed to allocate musb device\n");
ret = -ENOMEM;
- goto err1;
+ goto err0;
}
- musb->id = musbid;
musb->dev.parent = dev;
musb->dev.dma_mask = &musb_dmamask;
musb->dev.coherent_dma_mask = musb_dmamask;
@@ -556,18 +548,10 @@
err2:
platform_device_put(musb);
-err1:
- musb_put_id(dev, musbid);
err0:
return ret;
}
-static void dsps_delete_musb_pdev(struct dsps_glue *glue, u8 id)
-{
- musb_put_id(glue->dev, glue->musb[id]->id);
- platform_device_unregister(glue->musb[id]);
-}
-
static int __devinit dsps_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -627,7 +611,7 @@
dev_err(&pdev->dev, "failed to create child pdev\n");
/* release resources of previously created instances */
for (i--; i >= 0 ; i--)
- dsps_delete_musb_pdev(glue, i);
+ platform_device_unregister(glue->musb[i]);
goto err3;
}
}
@@ -652,7 +636,7 @@
/* delete the child platform device */
for (i = 0; i < wrp->instances ; i++)
- dsps_delete_musb_pdev(glue, i);
+ platform_device_unregister(glue->musb[i]);
/* disable usbss clocks */
pm_runtime_put(&pdev->dev);
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index a538fe1..dddd8f7 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -478,7 +478,6 @@
struct musb_hdrc_config *config;
struct resource *res;
int ret = -ENOMEM;
- int musbid;
glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
if (!glue) {
@@ -486,21 +485,12 @@
goto err0;
}
- /* get the musb id */
- musbid = musb_get_id(&pdev->dev, GFP_KERNEL);
- if (musbid < 0) {
- dev_err(&pdev->dev, "failed to allocate musb id\n");
- ret = -ENOMEM;
+ musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
+ if (!musb) {
+ dev_err(&pdev->dev, "failed to allocate musb device\n");
goto err0;
}
- musb = platform_device_alloc("musb-hdrc", musbid);
- if (!musb) {
- dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err1;
- }
-
- musb->id = musbid;
musb->dev.parent = &pdev->dev;
musb->dev.dma_mask = &omap2430_dmamask;
musb->dev.coherent_dma_mask = omap2430_dmamask;
@@ -521,7 +511,7 @@
dev_err(&pdev->dev,
"failed to allocate musb platfrom data\n");
ret = -ENOMEM;
- goto err1;
+ goto err2;
}
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
@@ -529,14 +519,14 @@
dev_err(&pdev->dev,
"failed to allocate musb board data\n");
ret = -ENOMEM;
- goto err1;
+ goto err2;
}
config = devm_kzalloc(&pdev->dev, sizeof(*config), GFP_KERNEL);
if (!data) {
dev_err(&pdev->dev,
"failed to allocate musb hdrc config\n");
- goto err1;
+ goto err2;
}
of_property_read_u32(np, "mode", (u32 *)&pdata->mode);
@@ -589,9 +579,6 @@
err2:
platform_device_put(musb);
-err1:
- musb_put_id(&pdev->dev, musbid);
-
err0:
return ret;
}
@@ -601,7 +588,6 @@
struct omap2430_glue *glue = platform_get_drvdata(pdev);
cancel_work_sync(&glue->omap_musb_mailbox_work);
- musb_put_id(&pdev->dev, glue->musb->id);
platform_device_unregister(glue->musb);
return 0;
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index 4454561..812719b 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -1160,7 +1160,6 @@
struct tusb6010_glue *glue;
int ret = -ENOMEM;
- int musbid;
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
if (!glue) {
@@ -1168,21 +1167,12 @@
goto err0;
}
- /* get the musb id */
- musbid = musb_get_id(&pdev->dev, GFP_KERNEL);
- if (musbid < 0) {
- dev_err(&pdev->dev, "failed to allocate musb id\n");
- ret = -ENOMEM;
+ musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
+ if (!musb) {
+ dev_err(&pdev->dev, "failed to allocate musb device\n");
goto err1;
}
- musb = platform_device_alloc("musb-hdrc", musbid);
- if (!musb) {
- dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err2;
- }
-
- musb->id = musbid;
musb->dev.parent = &pdev->dev;
musb->dev.dma_mask = &tusb_dmamask;
musb->dev.coherent_dma_mask = tusb_dmamask;
@@ -1218,9 +1208,6 @@
err3:
platform_device_put(musb);
-err2:
- musb_put_id(&pdev->dev, musbid);
-
err1:
kfree(glue);
@@ -1232,7 +1219,6 @@
{
struct tusb6010_glue *glue = platform_get_drvdata(pdev);
- musb_put_id(&pdev->dev, glue->musb->id);
platform_device_unregister(glue->musb);
kfree(glue);
diff --git a/drivers/usb/musb/ux500.c b/drivers/usb/musb/ux500.c
index 4197f30..5e9053e 100644
--- a/drivers/usb/musb/ux500.c
+++ b/drivers/usb/musb/ux500.c
@@ -65,7 +65,6 @@
struct platform_device *musb;
struct ux500_glue *glue;
struct clk *clk;
-
int ret = -ENOMEM;
glue = kzalloc(sizeof(*glue), GFP_KERNEL);
@@ -74,18 +73,10 @@
goto err0;
}
- /* get the musb id */
- musbid = musb_get_id(&pdev->dev, GFP_KERNEL);
- if (musbid < 0) {
- dev_err(&pdev->dev, "failed to allocate musb id\n");
- ret = -ENOMEM;
- goto err1;
- }
-
- musb = platform_device_alloc("musb-hdrc", musbid);
+ musb = platform_device_alloc("musb-hdrc", PLATFORM_DEVID_AUTO);
if (!musb) {
dev_err(&pdev->dev, "failed to allocate musb device\n");
- goto err2;
+ goto err1;
}
clk = clk_get(&pdev->dev, "usb");
@@ -101,7 +92,6 @@
goto err4;
}
- musb->id = musbid;
musb->dev.parent = &pdev->dev;
musb->dev.dma_mask = pdev->dev.dma_mask;
musb->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask;
@@ -144,9 +134,6 @@
err3:
platform_device_put(musb);
-err2:
- musb_put_id(&pdev->dev, musbid);
-
err1:
kfree(glue);
@@ -158,7 +145,6 @@
{
struct ux500_glue *glue = platform_get_drvdata(pdev);
- musb_put_id(&pdev->dev, glue->musb->id);
platform_device_unregister(glue->musb);
clk_disable(glue->clk);
clk_put(glue->clk);