[ALSA] sparse address space annotations

ALSA Core,RawMidi Midlevel,ALSA<-OSS emulation,ALSA sequencer
RME32 driver,RME96 driver,EMU10K1/EMU10K2 driver,NM256 driver
Add sparse annotations where we do strange this with __iomem/__user
pointers.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

4 files changed, 18 insertions, 8 deletions

diff --git a/sound/core/memory.c b/sound/core/memory.c
index 291b4769bde3..8fa888fc53a0 100644
--- a/sound/core/memory.c
+++ b/sound/core/memory.c
@@ -249,7 +249,7 @@ int __exit snd_memory_info_done(void)
 int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size_t count)
 {
 #if defined(__i386__) || defined(CONFIG_SPARC32)
-	return copy_to_user(dst, (const void*)src, count) ? -EFAULT : 0;
+	return copy_to_user(dst, (const void __force*)src, count) ? -EFAULT : 0;
 #else
 	char buf[256];
 	while (count) {
@@ -280,7 +280,7 @@ int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size
 int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size_t count)
 {
 #if defined(__i386__) || defined(CONFIG_SPARC32)
-	return copy_from_user((void*)dst, src, count) ? -EFAULT : 0;
+	return copy_from_user((void __force *)dst, src, count) ? -EFAULT : 0;
 #else
 	char buf[256];
 	while (count) {
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index a13bd7bb4c9f..1e606399d74a 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -850,7 +850,9 @@ static ssize_t snd_pcm_oss_write1(snd_pcm_substream_t *substream, const char __u
 					return xfer > 0 ? xfer : -EAGAIN;
 			}
 		} else {
-			tmp = snd_pcm_oss_write2(substream, (const char *)buf, runtime->oss.period_bytes, 0);
+			tmp = snd_pcm_oss_write2(substream,
+						 (const char __force *)buf,
+						 runtime->oss.period_bytes, 0);
 			if (tmp <= 0)
 				return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
 			runtime->oss.bytes += tmp;
@@ -926,7 +928,8 @@ static ssize_t snd_pcm_oss_read1(snd_pcm_substream_t *substream, char __user *bu
 			xfer += tmp;
 			runtime->oss.buffer_used -= tmp;
 		} else {
-			tmp = snd_pcm_oss_read2(substream, (char *)buf, runtime->oss.period_bytes, 0);
+			tmp = snd_pcm_oss_read2(substream, (char __force *)buf,
+						runtime->oss.period_bytes, 0);
 			if (tmp <= 0)
 				return xfer > 0 ? (snd_pcm_sframes_t)xfer : tmp;
 			runtime->oss.bytes += tmp;
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index edba4118271c..d705ec79429b 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -984,7 +984,9 @@ static ssize_t snd_rawmidi_read(struct file *file, char __user *buf, size_t coun
 			spin_lock_irq(&runtime->lock);
 		}
 		spin_unlock_irq(&runtime->lock);
-		count1 = snd_rawmidi_kernel_read1(substream, (unsigned char *)buf, count, 0);
+		count1 = snd_rawmidi_kernel_read1(substream,
+						  (unsigned char __force *)buf,
+						  count, 0);
 		if (count1 < 0)
 			return result > 0 ? result : count1;
 		result += count1;
@@ -1213,7 +1215,9 @@ static ssize_t snd_rawmidi_write(struct file *file, const char __user *buf, size
 			spin_lock_irq(&runtime->lock);
 		}
 		spin_unlock_irq(&runtime->lock);
-		count1 = snd_rawmidi_kernel_write1(substream, (unsigned char *)buf, count, 0);
+		count1 = snd_rawmidi_kernel_write1(substream,
+						   (unsigned char __force *)buf,
+						   count, 0);
 		if (count1 < 0)
 			return result > 0 ? result : count1;
 		result += count1;
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index d8f76afd284b..bd106625a783 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -413,7 +413,9 @@ static ssize_t snd_seq_read(struct file *file, char __user *buf, size_t count, l
 			}
 			count -= sizeof(snd_seq_event_t);
 			buf += sizeof(snd_seq_event_t);
-			err = snd_seq_expand_var_event(&cell->event, count, (char *)buf, 0, sizeof(snd_seq_event_t));
+			err = snd_seq_expand_var_event(&cell->event, count,
+						       (char __force *)buf, 0,
+						       sizeof(snd_seq_event_t));
 			if (err < 0)
 				break;
 			result += err;
@@ -1009,7 +1011,8 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf, size_t c
 			}
 			/* set user space pointer */
 			event.data.ext.len = extlen | SNDRV_SEQ_EXT_USRPTR;
-			event.data.ext.ptr = (char*)buf + sizeof(snd_seq_event_t);
+			event.data.ext.ptr = (char __force *)buf
+						+ sizeof(snd_seq_event_t);
 			len += extlen; /* increment data length */
 		} else {
 #ifdef CONFIG_COMPAT