firewire: fw-ohci: dma_free_coherent needs IRQs enabled
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c
index db70375..7e427b4 100644
--- a/drivers/firewire/fw-ohci.c
+++ b/drivers/firewire/fw-ohci.c
@@ -907,6 +907,8 @@
int self_id_count, i, j, reg;
int generation, new_generation;
unsigned long flags;
+ void *free_rom = NULL;
+ dma_addr_t free_rom_bus = 0;
reg = reg_read(ohci, OHCI1394_NodeID);
if (!(reg & OHCI1394_NodeID_idValid)) {
@@ -970,8 +972,8 @@
*/
if (ohci->next_config_rom != NULL) {
- dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
- ohci->config_rom, ohci->config_rom_bus);
+ free_rom = ohci->config_rom;
+ free_rom_bus = ohci->config_rom_bus;
ohci->config_rom = ohci->next_config_rom;
ohci->config_rom_bus = ohci->next_config_rom_bus;
ohci->next_config_rom = NULL;
@@ -990,6 +992,10 @@
spin_unlock_irqrestore(&ohci->lock, flags);
+ if (free_rom)
+ dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
+ free_rom, free_rom_bus);
+
fw_core_handle_bus_reset(&ohci->card, ohci->node_id, generation,
self_id_count, ohci->self_id_buffer);
}
@@ -1186,7 +1192,7 @@
{
struct fw_ohci *ohci;
unsigned long flags;
- int retval = 0;
+ int retval = -EBUSY;
__be32 *next_config_rom;
dma_addr_t next_config_rom_bus;
@@ -1240,10 +1246,7 @@
reg_write(ohci, OHCI1394_ConfigROMmap,
ohci->next_config_rom_bus);
- } else {
- dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
- next_config_rom, next_config_rom_bus);
- retval = -EBUSY;
+ retval = 0;
}
spin_unlock_irqrestore(&ohci->lock, flags);
@@ -1257,6 +1260,9 @@
*/
if (retval == 0)
fw_core_initiate_bus_reset(&ohci->card, 1);
+ else
+ dma_free_coherent(ohci->card.device, CONFIG_ROM_SIZE,
+ next_config_rom, next_config_rom_bus);
return retval;
}