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-rw-r--r--drivers/firewire/core-cdev.c20
-rw-r--r--drivers/firewire/net.c5
-rw-r--r--drivers/firewire/ohci.c42
3 files changed, 41 insertions, 26 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index b1c11775839c..e6ad3bb6c1a6 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -253,14 +253,11 @@ static int fw_device_op_open(struct inode *inode, struct file *file)
init_waitqueue_head(&client->wait);
init_waitqueue_head(&client->tx_flush_wait);
INIT_LIST_HEAD(&client->phy_receiver_link);
+ INIT_LIST_HEAD(&client->link);
kref_init(&client->kref);
file->private_data = client;
- mutex_lock(&device->client_list_mutex);
- list_add_tail(&client->link, &device->client_list);
- mutex_unlock(&device->client_list_mutex);
-
return nonseekable_open(inode, file);
}
@@ -451,15 +448,20 @@ static int ioctl_get_info(struct client *client, union ioctl_arg *arg)
if (ret != 0)
return -EFAULT;
+ mutex_lock(&client->device->client_list_mutex);
+
client->bus_reset_closure = a->bus_reset_closure;
if (a->bus_reset != 0) {
fill_bus_reset_event(&bus_reset, client);
- if (copy_to_user(u64_to_uptr(a->bus_reset),
- &bus_reset, sizeof(bus_reset)))
- return -EFAULT;
+ ret = copy_to_user(u64_to_uptr(a->bus_reset),
+ &bus_reset, sizeof(bus_reset));
}
+ if (ret == 0 && list_empty(&client->link))
+ list_add_tail(&client->link, &client->device->client_list);
- return 0;
+ mutex_unlock(&client->device->client_list_mutex);
+
+ return ret ? -EFAULT : 0;
}
static int add_client_resource(struct client *client,
@@ -1583,7 +1585,7 @@ static int dispatch_ioctl(struct client *client,
if (_IOC_TYPE(cmd) != '#' ||
_IOC_NR(cmd) >= ARRAY_SIZE(ioctl_handlers) ||
_IOC_SIZE(cmd) > sizeof(buffer))
- return -EINVAL;
+ return -ENOTTY;
if (_IOC_DIR(cmd) == _IOC_READ)
memset(&buffer, 0, _IOC_SIZE(cmd));
diff --git a/drivers/firewire/net.c b/drivers/firewire/net.c
index eced1c25bf58..03a7a85d0424 100644
--- a/drivers/firewire/net.c
+++ b/drivers/firewire/net.c
@@ -7,6 +7,7 @@
*/
#include <linux/bug.h>
+#include <linux/compiler.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/ethtool.h>
@@ -73,7 +74,7 @@ struct rfc2734_arp {
__be32 fifo_lo; /* lo 32bits of sender's FIFO addr */
__be32 sip; /* Sender's IP Address */
__be32 tip; /* IP Address of requested hw addr */
-} __attribute__((packed));
+} __packed;
/* This header format is specific to this driver implementation. */
#define FWNET_ALEN 8
@@ -81,7 +82,7 @@ struct rfc2734_arp {
struct fwnet_header {
u8 h_dest[FWNET_ALEN]; /* destination address */
__be16 h_proto; /* packet type ID field */
-} __attribute__((packed));
+} __packed;
/* IPv4 and IPv6 encapsulation header */
struct rfc2734_header {
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index ebb897329c1e..bcf792fac442 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -253,7 +253,6 @@ static inline struct fw_ohci *fw_ohci(struct fw_card *card)
#define OHCI1394_MAX_PHYS_RESP_RETRIES 0x8
#define OHCI1394_REGISTER_SIZE 0x800
-#define OHCI_LOOP_COUNT 500
#define OHCI1394_PCI_HCI_Control 0x40
#define SELF_ID_BUF_SIZE 0x800
#define OHCI_TCODE_PHY_PACKET 0x0e
@@ -514,6 +513,12 @@ static inline void flush_writes(const struct fw_ohci *ohci)
reg_read(ohci, OHCI1394_Version);
}
+/*
+ * Beware! read_phy_reg(), write_phy_reg(), update_phy_reg(), and
+ * read_paged_phy_reg() require the caller to hold ohci->phy_reg_mutex.
+ * In other words, only use ohci_read_phy_reg() and ohci_update_phy_reg()
+ * directly. Exceptions are intrinsically serialized contexts like pci_probe.
+ */
static int read_phy_reg(struct fw_ohci *ohci, int addr)
{
u32 val;
@@ -522,6 +527,9 @@ static int read_phy_reg(struct fw_ohci *ohci, int addr)
reg_write(ohci, OHCI1394_PhyControl, OHCI1394_PhyControl_Read(addr));
for (i = 0; i < 3 + 100; i++) {
val = reg_read(ohci, OHCI1394_PhyControl);
+ if (!~val)
+ return -ENODEV; /* Card was ejected. */
+
if (val & OHCI1394_PhyControl_ReadDone)
return OHCI1394_PhyControl_ReadData(val);
@@ -545,6 +553,9 @@ static int write_phy_reg(const struct fw_ohci *ohci, int addr, u32 val)
OHCI1394_PhyControl_Write(addr, val));
for (i = 0; i < 3 + 100; i++) {
val = reg_read(ohci, OHCI1394_PhyControl);
+ if (!~val)
+ return -ENODEV; /* Card was ejected. */
+
if (!(val & OHCI1394_PhyControl_WritePending))
return 0;
@@ -630,7 +641,6 @@ static void ar_context_link_page(struct ar_context *ctx, unsigned int index)
ctx->last_buffer_index = index;
reg_write(ctx->ohci, CONTROL_SET(ctx->regs), CONTEXT_WAKE);
- flush_writes(ctx->ohci);
}
static void ar_context_release(struct ar_context *ctx)
@@ -1002,7 +1012,6 @@ static void ar_context_run(struct ar_context *ctx)
reg_write(ctx->ohci, COMMAND_PTR(ctx->regs), ctx->descriptors_bus | 1);
reg_write(ctx->ohci, CONTROL_SET(ctx->regs), CONTEXT_RUN);
- flush_writes(ctx->ohci);
}
static struct descriptor *find_branch_descriptor(struct descriptor *d, int z)
@@ -1202,14 +1211,14 @@ static void context_stop(struct context *ctx)
reg_write(ctx->ohci, CONTROL_CLEAR(ctx->regs), CONTEXT_RUN);
ctx->running = false;
- flush_writes(ctx->ohci);
- for (i = 0; i < 10; i++) {
+ for (i = 0; i < 1000; i++) {
reg = reg_read(ctx->ohci, CONTROL_SET(ctx->regs));
if ((reg & CONTEXT_ACTIVE) == 0)
return;
- mdelay(1);
+ if (i)
+ udelay(10);
}
fw_error("Error: DMA context still active (0x%08x)\n", reg);
}
@@ -1346,12 +1355,10 @@ static int at_context_queue_packet(struct context *ctx,
context_append(ctx, d, z, 4 - z);
- if (ctx->running) {
+ if (ctx->running)
reg_write(ohci, CONTROL_SET(ctx->regs), CONTEXT_WAKE);
- flush_writes(ohci);
- } else {
+ else
context_run(ctx, 0);
- }
return 0;
}
@@ -1960,14 +1967,18 @@ static irqreturn_t irq_handler(int irq, void *data)
static int software_reset(struct fw_ohci *ohci)
{
+ u32 val;
int i;
reg_write(ohci, OHCI1394_HCControlSet, OHCI1394_HCControl_softReset);
+ for (i = 0; i < 500; i++) {
+ val = reg_read(ohci, OHCI1394_HCControlSet);
+ if (!~val)
+ return -ENODEV; /* Card was ejected. */
- for (i = 0; i < OHCI_LOOP_COUNT; i++) {
- if ((reg_read(ohci, OHCI1394_HCControlSet) &
- OHCI1394_HCControl_softReset) == 0)
+ if (!(val & OHCI1394_HCControl_softReset))
return 0;
+
msleep(1);
}
@@ -2197,7 +2208,9 @@ static int ohci_enable(struct fw_card *card,
OHCI1394_LinkControl_rcvPhyPkt);
ar_context_run(&ohci->ar_request_ctx);
- ar_context_run(&ohci->ar_response_ctx); /* also flushes writes */
+ ar_context_run(&ohci->ar_response_ctx);
+
+ flush_writes(ohci);
/* We are ready to go, reset bus to finish initialization. */
fw_schedule_bus_reset(&ohci->card, false, true);
@@ -3129,7 +3142,6 @@ static void ohci_flush_queue_iso(struct fw_iso_context *base)
&container_of(base, struct iso_context, base)->context;
reg_write(ctx->ohci, CONTROL_SET(ctx->regs), CONTEXT_WAKE);
- flush_writes(ctx->ohci);
}
static const struct fw_card_driver ohci_driver = {
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 02:04:36 +0100