1 files changed, 7 insertions, 0 deletions

diff --git a/sound/pci/emu10k1/io.c b/sound/pci/emu10k1/io.c
index 2862e17446fe..a02638350a0a 100644
--- a/sound/pci/emu10k1/io.c
+++ b/sound/pci/emu10k1/io.c
@@ -227,11 +227,14 @@ int snd_emu10k1_i2c_write(struct snd_emu10k1 *emu,
 
 int snd_emu1010_fpga_write(struct snd_emu10k1 * emu, u32 reg, u32 value)
 {
+        unsigned long flags;
+
         if (reg > 0x3f)
                 return 1;
         reg += 0x40; /* 0x40 upwards are registers. */
         if (value < 0 || value > 0x3f) /* 0 to 0x3f are values */
                 return 1;
+        spin_lock_irqsave(&emu->emu_lock, flags);
         outl(reg, emu->port + A_IOCFG);
         udelay(10);
         outl(reg | 0x80, emu->port + A_IOCFG);  /* High bit clocks the value into the fpga. */
@@ -239,20 +242,24 @@ int snd_emu1010_fpga_write(struct snd_emu10k1 * emu, u32 reg, u32 value)
         outl(value, emu->port + A_IOCFG);
         udelay(10);
         outl(value | 0x80 , emu->port + A_IOCFG);  /* High bit clocks the value into the fpga. */
+        spin_unlock_irqrestore(&emu->emu_lock, flags);
 
         return 0;
 }
 
 int snd_emu1010_fpga_read(struct snd_emu10k1 * emu, u32 reg, u32 *value)
 {
+        unsigned long flags;
         if (reg > 0x3f)
                 return 1;
         reg += 0x40; /* 0x40 upwards are registers. */
+        spin_lock_irqsave(&emu->emu_lock, flags);
         outl(reg, emu->port + A_IOCFG);
         udelay(10);
         outl(reg | 0x80, emu->port + A_IOCFG);  /* High bit clocks the value into the fpga. */
         udelay(10);
         *value = ((inl(emu->port + A_IOCFG) >> 8) & 0x7f);
+        spin_unlock_irqrestore(&emu->emu_lock, flags);
 
         return 0;
 }