On Sun, Jan 27, 2008 at 10:21:00AM +0100, Sam Ravnborg wrote:
>Hi WANG.
>
>Thanks for chasing these annoying warnings - it is
>good to keep the warning level low so we keep
>attention when new warnings happens!
>
>> index d775eb6..eec1624 100644
>> --- a/drivers/video/aty/atyfb_base.c
>> +++ b/drivers/video/aty/atyfb_base.c
>> @@ -244,7 +244,9 @@ static int atyfb_sync(struct fb_info *info);
>>       */
>>  
>>  static int aty_init(struct fb_info *info);
>> +#if defined(CONFIG_PM) && defined(CONFIG_PCI)
>>  static void aty_resume_chip(struct fb_info *info);
>> +#endif
>
>It is preferable to have the forward declaration unconditional
>to keep the #if/#endif count low.
>
>
>>  #endif
>> @@ -2709,6 +2711,7 @@ aty_init_exit:
>>      return -1;
>>  }
>>  
>> +#if defined(CONFIG_PM) && defined(CONFIG_PCI)
>>  static void aty_resume_chip(struct fb_info *info)
>>  {
>>      struct atyfb_par *par = info->par;
>> @@ -2721,6 +2724,7 @@ static void aty_resume_chip(struct fb_info *info)
>>      if (par->aux_start)
>>              aty_st_le32(BUS_CNTL, aty_ld_le32(BUS_CNTL, par) | 
>> BUS_APER_REG_DIS, par);
>>  }
>> +#endif
>
>Moving the aty_resume_chip() function down just above
>atyfb_pci_resume() would put in in the same #if/#endif
>block and you can kill the forward declaration too.
>Did you try that out?

Yes, it works.

Here's the updated patch, and I dropped the drivers/char/applicom.c
part as Jiri Slaby has better fix.

------->

Fix defined-but-not-used warnings from files under drivers/,
such as:

drivers/video/aty/atyfb_base.c:2713: warning: ‘aty_resume_chip’ defined but not 
used

Compile tests passed.

Cc: Jeff Garzik <[EMAIL PROTECTED]>
Cc: Greg KH <[EMAIL PROTECTED]>
Cc: Sam Ravnborg <[EMAIL PROTECTED]>
Cc: Jiri Slaby <[EMAIL PROTECTED]>
Signed-off-by: WANG Cong <[EMAIL PROTECTED]>

---

diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index 905d1f5..ae1f565 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -897,7 +897,6 @@ static char *driver_version = "$Revision: 4.38 $";
 
 static int synclink_init_one (struct pci_dev *dev,
                                     const struct pci_device_id *ent);
-static void synclink_remove_one (struct pci_dev *dev);
 
 static struct pci_device_id synclink_pci_tbl[] = {
        { PCI_VENDOR_ID_MICROGATE, PCI_DEVICE_ID_MICROGATE_USC, PCI_ANY_ID, 
PCI_ANY_ID, },
@@ -908,6 +907,10 @@ MODULE_DEVICE_TABLE(pci, synclink_pci_tbl);
 
 MODULE_LICENSE("GPL");
 
+static void __devexit synclink_remove_one (struct pci_dev *dev)
+{
+}
+
 static struct pci_driver synclink_pci_driver = {
        .name           = "synclink",
        .id_table       = synclink_pci_tbl,
@@ -8166,7 +8169,3 @@ static int __devinit synclink_init_one (struct pci_dev 
*dev,
        return 0;
 }
 
-static void __devexit synclink_remove_one (struct pci_dev *dev)
-{
-}
-
diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
index dfbf24c..f33f82a 100644
--- a/drivers/crypto/hifn_795x.c
+++ b/drivers/crypto/hifn_795x.c
@@ -2730,7 +2730,7 @@ err_out_disable_pci_device:
        return err;
 }
 
-static void hifn_remove(struct pci_dev *pdev)
+static void __devexit hifn_remove(struct pci_dev *pdev)
 {
        int i;
        struct hifn_device *dev;
diff --git a/drivers/telephony/ixj.c b/drivers/telephony/ixj.c
index 49cd979..1549c0b 100644
--- a/drivers/telephony/ixj.c
+++ b/drivers/telephony/ixj.c
@@ -284,7 +284,7 @@ static int samplerate = 100;
 
 module_param(ixjdebug, int, 0);
 
-static struct pci_device_id ixj_pci_tbl[] __devinitdata = {
+static struct pci_device_id ixj_pci_tbl[] __used __devinitdata = {
        { PCI_VENDOR_ID_QUICKNET, PCI_DEVICE_ID_QUICKNET_XJ,
          PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
        { }
diff --git a/drivers/video/aty/aty128fb.c b/drivers/video/aty/aty128fb.c
index cbd3308..4e57fcf 100644
--- a/drivers/video/aty/aty128fb.c
+++ b/drivers/video/aty/aty128fb.c
@@ -165,7 +165,7 @@ static const char *r128_family[] __devinitdata = {
  */
 static int aty128_probe(struct pci_dev *pdev,
                                const struct pci_device_id *ent);
-static void aty128_remove(struct pci_dev *pdev);
+static void __devexit aty128_remove(struct pci_dev *pdev);
 static int aty128_pci_suspend(struct pci_dev *pdev, pm_message_t state);
 static int aty128_pci_resume(struct pci_dev *pdev);
 static int aty128_do_resume(struct pci_dev *pdev);
diff --git a/drivers/video/aty/atyfb_base.c b/drivers/video/aty/atyfb_base.c
index d775eb6..3829f3e 100644
--- a/drivers/video/aty/atyfb_base.c
+++ b/drivers/video/aty/atyfb_base.c
@@ -244,7 +244,6 @@ static int atyfb_sync(struct fb_info *info);
      */
 
 static int aty_init(struct fb_info *info);
-static void aty_resume_chip(struct fb_info *info);
 #ifdef CONFIG_ATARI
 static int store_video_par(char *videopar, unsigned char m64_num);
 #endif
@@ -2076,6 +2075,20 @@ static int atyfb_pci_suspend(struct pci_dev *pdev, 
pm_message_t state)
        return 0;
 }
 
+static void aty_resume_chip(struct fb_info *info)
+{
+       struct atyfb_par *par = info->par;
+
+       aty_st_le32(MEM_CNTL, par->mem_cntl, par);
+
+       if (par->pll_ops->resume_pll)
+               par->pll_ops->resume_pll(info, &par->pll);
+
+       if (par->aux_start)
+               aty_st_le32(BUS_CNTL, aty_ld_le32(BUS_CNTL, par) | 
BUS_APER_REG_DIS, par);
+}
+
+
 static int atyfb_pci_resume(struct pci_dev *pdev)
 {
        struct fb_info *info = pci_get_drvdata(pdev);
@@ -2709,19 +2722,6 @@ aty_init_exit:
        return -1;
 }
 
-static void aty_resume_chip(struct fb_info *info)
-{
-       struct atyfb_par *par = info->par;
-
-       aty_st_le32(MEM_CNTL, par->mem_cntl, par);
-
-       if (par->pll_ops->resume_pll)
-               par->pll_ops->resume_pll(info, &par->pll);
-
-       if (par->aux_start)
-               aty_st_le32(BUS_CNTL, aty_ld_le32(BUS_CNTL, par) | 
BUS_APER_REG_DIS, par);
-}
-
 #ifdef CONFIG_ATARI
 static int __devinit store_video_par(char *video_str, unsigned char m64_num)
 {
diff --git a/drivers/video/imsttfb.c b/drivers/video/imsttfb.c
index 3ab91bf..cdedd72 100644
--- a/drivers/video/imsttfb.c
+++ b/drivers/video/imsttfb.c
@@ -400,7 +400,6 @@ static struct imstt_regvals tvp_reg_init_20 = {
  * PCI driver prototypes
  */
 static int imsttfb_probe(struct pci_dev *pdev, const struct pci_device_id 
*ent);
-static void imsttfb_remove(struct pci_dev *pdev);
 
 /*
  * Register access
@@ -1328,6 +1327,21 @@ static struct pci_device_id imsttfb_pci_tbl[] = {
 
 MODULE_DEVICE_TABLE(pci, imsttfb_pci_tbl);
 
+static void __devexit
+imsttfb_remove(struct pci_dev *pdev)
+{
+       struct fb_info *info = pci_get_drvdata(pdev);
+       struct imstt_par *par = info->par;
+       int size = pci_resource_len(pdev, 0);
+
+       unregister_framebuffer(info);
+       iounmap(par->cmap_regs);
+       iounmap(par->dc_regs);
+       iounmap(info->screen_base);
+       release_mem_region(info->fix.smem_start, size);
+       framebuffer_release(info);
+}
+
 static struct pci_driver imsttfb_pci_driver = {
        .name =         "imsttfb",
        .id_table =     imsttfb_pci_tbl,
@@ -1533,21 +1547,6 @@ imsttfb_probe(struct pci_dev *pdev, const struct 
pci_device_id *ent)
        return 0;
 }
 
-static void __devexit
-imsttfb_remove(struct pci_dev *pdev)
-{
-       struct fb_info *info = pci_get_drvdata(pdev);
-       struct imstt_par *par = info->par;
-       int size = pci_resource_len(pdev, 0);
-
-       unregister_framebuffer(info);
-       iounmap(par->cmap_regs);
-       iounmap(par->dc_regs);
-       iounmap(info->screen_base);
-       release_mem_region(info->fix.smem_start, size);
-       framebuffer_release(info);
-}
-
 #ifndef MODULE
 static int __init
 imsttfb_setup(char *options)
diff --git a/drivers/video/kyro/fbdev.c b/drivers/video/kyro/fbdev.c
index acb9370..6e49c7a 100644
--- a/drivers/video/kyro/fbdev.c
+++ b/drivers/video/kyro/fbdev.c
@@ -90,7 +90,6 @@ static int nomtrr __devinitdata = 0;
 
 /* PCI driver prototypes */
 static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
-static void kyrofb_remove(struct pci_dev *pdev);
 
 static struct fb_videomode kyro_modedb[] __devinitdata = {
        {
@@ -649,6 +648,36 @@ static struct pci_device_id kyrofb_pci_tbl[] = {
 
 MODULE_DEVICE_TABLE(pci, kyrofb_pci_tbl);
 
+static void __devexit kyrofb_remove(struct pci_dev *pdev)
+{
+       struct fb_info *info = pci_get_drvdata(pdev);
+       struct kyrofb_info *par = info->par;
+
+       /* Reset the board */
+       StopVTG(deviceInfo.pSTGReg);
+       DisableRamdacOutput(deviceInfo.pSTGReg);
+
+       /* Sync up the PLL */
+       SetCoreClockPLL(deviceInfo.pSTGReg, pdev);
+
+       deviceInfo.ulNextFreeVidMem = 0;
+       deviceInfo.ulOverlayOffset = 0;
+
+       iounmap(info->screen_base);
+       iounmap(par->regbase);
+
+#ifdef CONFIG_MTRR
+       if (par->mtrr_handle)
+               mtrr_del(par->mtrr_handle,
+                        info->fix.smem_start,
+                        info->fix.smem_len);
+#endif
+
+       unregister_framebuffer(info);
+       pci_set_drvdata(pdev, NULL);
+       framebuffer_release(info);
+}
+
 static struct pci_driver kyrofb_pci_driver = {
        .name           = "kyrofb",
        .id_table       = kyrofb_pci_tbl,
@@ -754,36 +783,6 @@ out_unmap:
        return -EINVAL;
 }
 
-static void __devexit kyrofb_remove(struct pci_dev *pdev)
-{
-       struct fb_info *info = pci_get_drvdata(pdev);
-       struct kyrofb_info *par = info->par;
-
-       /* Reset the board */
-       StopVTG(deviceInfo.pSTGReg);
-       DisableRamdacOutput(deviceInfo.pSTGReg);
-
-       /* Sync up the PLL */
-       SetCoreClockPLL(deviceInfo.pSTGReg, pdev);
-
-       deviceInfo.ulNextFreeVidMem = 0;
-       deviceInfo.ulOverlayOffset = 0;
-
-       iounmap(info->screen_base);
-       iounmap(par->regbase);
-
-#ifdef CONFIG_MTRR
-       if (par->mtrr_handle)
-               mtrr_del(par->mtrr_handle,
-                        info->fix.smem_start,
-                        info->fix.smem_len);
-#endif
-
-       unregister_framebuffer(info);
-       pci_set_drvdata(pdev, NULL);
-       framebuffer_release(info);
-}
-
 static int __init kyrofb_init(void)
 {
 #ifndef MODULE
diff --git a/drivers/watchdog/alim1535_wdt.c b/drivers/watchdog/alim1535_wdt.c
index b481cc0..fd2dfa1 100644
--- a/drivers/watchdog/alim1535_wdt.c
+++ b/drivers/watchdog/alim1535_wdt.c
@@ -311,7 +311,7 @@ static int ali_notify_sys(struct notifier_block *this, 
unsigned long code, void
  *     want to register another driver on the same PCI id.
  */
 
-static struct pci_device_id ali_pci_tbl[] = {
+static struct pci_device_id ali_pci_tbl[] __used = {
        { PCI_VENDOR_ID_AL, 0x1533, PCI_ANY_ID, PCI_ANY_ID,},
        { PCI_VENDOR_ID_AL, 0x1535, PCI_ANY_ID, PCI_ANY_ID,},
        { 0, },
diff --git a/drivers/watchdog/alim7101_wdt.c b/drivers/watchdog/alim7101_wdt.c
index 67aed9f..4bcae99 100644
--- a/drivers/watchdog/alim7101_wdt.c
+++ b/drivers/watchdog/alim7101_wdt.c
@@ -409,7 +409,7 @@ err_out:
 module_init(alim7101_wdt_init);
 module_exit(alim7101_wdt_unload);
 
-static struct pci_device_id alim7101_pci_tbl[] __devinitdata = {
+static struct pci_device_id alim7101_pci_tbl[] __used __devinitdata = {
        { PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533) },
        { PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101) },
        { }
--
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