ipmi: Make some data const that was only read

Several data structures were only used for reading, so make them
const.

Signed-off-by: Corey Minyard <cminyard@mvista.com>

7 files changed, 40 insertions, 37 deletions

diff --git a/drivers/char/ipmi/ipmi_bt_sm.c b/drivers/char/ipmi/ipmi_bt_sm.c
index 61e71616689b..feafdab734ae 100644
--- a/drivers/char/ipmi/ipmi_bt_sm.c
+++ b/drivers/char/ipmi/ipmi_bt_sm.c
@@ -694,7 +694,7 @@ static int bt_size(void)
         return sizeof(struct si_sm_data);
 }
 
-struct si_sm_handlers bt_smi_handlers = {
+const struct si_sm_handlers bt_smi_handlers = {
         .init_data              = bt_init_data,
         .start_transaction      = bt_start_transaction,
         .get_result             = bt_get_result,
diff --git a/drivers/char/ipmi/ipmi_kcs_sm.c b/drivers/char/ipmi/ipmi_kcs_sm.c
index 8c25f596808a..1da61af7f576 100644
--- a/drivers/char/ipmi/ipmi_kcs_sm.c
+++ b/drivers/char/ipmi/ipmi_kcs_sm.c
@@ -540,7 +540,7 @@ static void kcs_cleanup(struct si_sm_data *kcs)
 {
 }
 
-struct si_sm_handlers kcs_smi_handlers = {
+const struct si_sm_handlers kcs_smi_handlers = {
         .init_data         = init_kcs_data,
         .start_transaction = start_kcs_transaction,
         .get_result        = get_kcs_result,
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index ef4a418f630a..e9ea29c4ec60 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -342,7 +342,7 @@ struct ipmi_smi {
          * an umpreemptible region to use this.  You must fetch the
          * value into a local variable and make sure it is not NULL.
          */
-        struct ipmi_smi_handlers *handlers;
+        const struct ipmi_smi_handlers *handlers;
         void                     *send_info;
 
 #ifdef CONFIG_PROC_FS
@@ -1015,7 +1015,7 @@ int ipmi_get_smi_info(int if_num, struct ipmi_smi_info *data)
 {
         int           rv = 0;
         ipmi_smi_t    intf;
-        struct ipmi_smi_handlers *handlers;
+        const struct ipmi_smi_handlers *handlers;
 
         mutex_lock(&ipmi_interfaces_mutex);
         list_for_each_entry_rcu(intf, &ipmi_interfaces, link) {
@@ -1501,7 +1501,7 @@ static struct ipmi_smi_msg *smi_add_send_msg(ipmi_smi_t intf,
 }
 
 
-static void smi_send(ipmi_smi_t intf, struct ipmi_smi_handlers *handlers,
+static void smi_send(ipmi_smi_t intf, const struct ipmi_smi_handlers *handlers,
                      struct ipmi_smi_msg *smi_msg, int priority)
 {
         int run_to_completion = intf->run_to_completion;
@@ -2747,7 +2747,7 @@ void ipmi_poll_interface(ipmi_user_t user)
 }
 EXPORT_SYMBOL(ipmi_poll_interface);
 
-int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
+int ipmi_register_smi(const struct ipmi_smi_handlers *handlers,
                       void                     *send_info,
                       struct ipmi_device_id    *device_id,
                       struct device            *si_dev,
@@ -4019,7 +4019,7 @@ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
                               unsigned int *waiting_msgs)
 {
         struct ipmi_recv_msg     *msg;
-        struct ipmi_smi_handlers *handlers;
+        const struct ipmi_smi_handlers *handlers;
 
         if (intf->in_shutdown)
                 return;
@@ -4086,7 +4086,7 @@ static void check_msg_timeout(ipmi_smi_t intf, struct seq_table *ent,
                                 ipmi_inc_stat(intf,
                                               retransmitted_ipmb_commands);
 
-                        smi_send(intf, intf->handlers, smi_msg, 0);
+                        smi_send(intf, handlers, smi_msg, 0);
                 } else
                         ipmi_free_smi_msg(smi_msg);
 
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 4387bd6de2ca..4a4a13dc98b3 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -163,7 +163,7 @@ struct smi_info {
         int                    intf_num;
         ipmi_smi_t             intf;
         struct si_sm_data      *si_sm;
-        struct si_sm_handlers  *handlers;
+        const struct si_sm_handlers *handlers;
         enum si_type           si_type;
         spinlock_t             si_lock;
         struct ipmi_smi_msg    *waiting_msg;
@@ -1254,7 +1254,7 @@ static void set_maintenance_mode(void *send_info, bool enable)
                 atomic_set(&smi_info->req_events, 0);
 }
 
-static struct ipmi_smi_handlers handlers = {
+static const struct ipmi_smi_handlers handlers = {
         .owner                  = THIS_MODULE,
         .start_processing       = smi_start_processing,
         .get_smi_info           = get_smi_info,
@@ -1442,14 +1442,14 @@ static int std_irq_setup(struct smi_info *info)
         return rv;
 }
 
-static unsigned char port_inb(struct si_sm_io *io, unsigned int offset)
+static unsigned char port_inb(const struct si_sm_io *io, unsigned int offset)
 {
         unsigned int addr = io->addr_data;
 
         return inb(addr + (offset * io->regspacing));
 }
 
-static void port_outb(struct si_sm_io *io, unsigned int offset,
+static void port_outb(const struct si_sm_io *io, unsigned int offset,
                       unsigned char b)
 {
         unsigned int addr = io->addr_data;
@@ -1457,14 +1457,14 @@ static void port_outb(struct si_sm_io *io, unsigned int offset,
         outb(b, addr + (offset * io->regspacing));
 }
 
-static unsigned char port_inw(struct si_sm_io *io, unsigned int offset)
+static unsigned char port_inw(const struct si_sm_io *io, unsigned int offset)
 {
         unsigned int addr = io->addr_data;
 
         return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff;
 }
 
-static void port_outw(struct si_sm_io *io, unsigned int offset,
+static void port_outw(const struct si_sm_io *io, unsigned int offset,
                       unsigned char b)
 {
         unsigned int addr = io->addr_data;
@@ -1472,14 +1472,14 @@ static void port_outw(struct si_sm_io *io, unsigned int offset,
         outw(b << io->regshift, addr + (offset * io->regspacing));
 }
 
-static unsigned char port_inl(struct si_sm_io *io, unsigned int offset)
+static unsigned char port_inl(const struct si_sm_io *io, unsigned int offset)
 {
         unsigned int addr = io->addr_data;
 
         return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff;
 }
 
-static void port_outl(struct si_sm_io *io, unsigned int offset,
+static void port_outl(const struct si_sm_io *io, unsigned int offset,
                       unsigned char b)
 {
         unsigned int addr = io->addr_data;
@@ -1552,49 +1552,52 @@ static int port_setup(struct smi_info *info)
         return 0;
 }
 
-static unsigned char intf_mem_inb(struct si_sm_io *io, unsigned int offset)
+static unsigned char intf_mem_inb(const struct si_sm_io *io,
+                                  unsigned int offset)
 {
         return readb((io->addr)+(offset * io->regspacing));
 }
 
-static void intf_mem_outb(struct si_sm_io *io, unsigned int offset,
-                     unsigned char b)
+static void intf_mem_outb(const struct si_sm_io *io, unsigned int offset,
+                          unsigned char b)
 {
         writeb(b, (io->addr)+(offset * io->regspacing));
 }
 
-static unsigned char intf_mem_inw(struct si_sm_io *io, unsigned int offset)
+static unsigned char intf_mem_inw(const struct si_sm_io *io,
+                                  unsigned int offset)
 {
         return (readw((io->addr)+(offset * io->regspacing)) >> io->regshift)
                 & 0xff;
 }
 
-static void intf_mem_outw(struct si_sm_io *io, unsigned int offset,
-                     unsigned char b)
+static void intf_mem_outw(const struct si_sm_io *io, unsigned int offset,
+                          unsigned char b)
 {
         writeb(b << io->regshift, (io->addr)+(offset * io->regspacing));
 }
 
-static unsigned char intf_mem_inl(struct si_sm_io *io, unsigned int offset)
+static unsigned char intf_mem_inl(const struct si_sm_io *io,
+                                  unsigned int offset)
 {
         return (readl((io->addr)+(offset * io->regspacing)) >> io->regshift)
                 & 0xff;
 }
 
-static void intf_mem_outl(struct si_sm_io *io, unsigned int offset,
-                     unsigned char b)
+static void intf_mem_outl(const struct si_sm_io *io, unsigned int offset,
+                          unsigned char b)
 {
         writel(b << io->regshift, (io->addr)+(offset * io->regspacing));
 }
 
 #ifdef readq
-static unsigned char mem_inq(struct si_sm_io *io, unsigned int offset)
+static unsigned char mem_inq(const struct si_sm_io *io, unsigned int offset)
 {
         return (readq((io->addr)+(offset * io->regspacing)) >> io->regshift)
                 & 0xff;
 }
 
-static void mem_outq(struct si_sm_io *io, unsigned int offset,
+static void mem_outq(const struct si_sm_io *io, unsigned int offset,
                      unsigned char b)
 {
         writeq(b << io->regshift, (io->addr)+(offset * io->regspacing));
@@ -2522,7 +2525,7 @@ static void ipmi_pci_remove(struct pci_dev *pdev)
         pci_disable_device(pdev);
 }
 
-static struct pci_device_id ipmi_pci_devices[] = {
+static const struct pci_device_id ipmi_pci_devices[] = {
         { PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) },
         { PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE_MASK) },
         { 0, }
@@ -2751,7 +2754,7 @@ err_free:
         return rv;
 }
 
-static struct acpi_device_id acpi_ipmi_match[] = {
+static const struct acpi_device_id acpi_ipmi_match[] = {
         { "IPI0001", 0 },
         { },
 };
@@ -3324,7 +3327,7 @@ static inline void wait_for_timer_and_thread(struct smi_info *smi_info)
                 del_timer_sync(&smi_info->si_timer);
 }
 
-static struct ipmi_default_vals
+static const struct ipmi_default_vals
 {
         int type;
         int port;
diff --git a/drivers/char/ipmi/ipmi_si_sm.h b/drivers/char/ipmi/ipmi_si_sm.h
index df89f73475fb..a705027c0493 100644
--- a/drivers/char/ipmi/ipmi_si_sm.h
+++ b/drivers/char/ipmi/ipmi_si_sm.h
@@ -46,8 +46,8 @@ struct si_sm_data;
  * this interface.
  */
 struct si_sm_io {
-        unsigned char (*inputb)(struct si_sm_io *io, unsigned int offset);
-        void (*outputb)(struct si_sm_io *io,
+        unsigned char (*inputb)(const struct si_sm_io *io, unsigned int offset);
+        void (*outputb)(const struct si_sm_io *io,
                         unsigned int  offset,
                         unsigned char b);
 
@@ -135,7 +135,7 @@ struct si_sm_handlers {
 };
 
 /* Current state machines that we can use. */
-extern struct si_sm_handlers kcs_smi_handlers;
-extern struct si_sm_handlers smic_smi_handlers;
-extern struct si_sm_handlers bt_smi_handlers;
+extern const struct si_sm_handlers kcs_smi_handlers;
+extern const struct si_sm_handlers smic_smi_handlers;
+extern const struct si_sm_handlers bt_smi_handlers;
 
diff --git a/drivers/char/ipmi/ipmi_smic_sm.c b/drivers/char/ipmi/ipmi_smic_sm.c
index c8e77afa8b96..8f7c73ff58f2 100644
--- a/drivers/char/ipmi/ipmi_smic_sm.c
+++ b/drivers/char/ipmi/ipmi_smic_sm.c
@@ -589,7 +589,7 @@ static int smic_size(void)
         return sizeof(struct si_sm_data);
 }
 
-struct si_sm_handlers smic_smi_handlers = {
+const struct si_sm_handlers smic_smi_handlers = {
         .init_data         = init_smic_data,
         .start_transaction = start_smic_transaction,
         .get_result        = smic_get_result,
diff --git a/include/linux/ipmi_smi.h b/include/linux/ipmi_smi.h
index 0b1e569f5ff5..41de0cf34c49 100644
--- a/include/linux/ipmi_smi.h
+++ b/include/linux/ipmi_smi.h
@@ -207,7 +207,7 @@ static inline int ipmi_demangle_device_id(const unsigned char *data,
    upper layer until the start_processing() function in the handlers
    is called, and the lower layer must get the interface from that
    call. */
-int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
+int ipmi_register_smi(const struct ipmi_smi_handlers *handlers,
                       void                     *send_info,
                       struct ipmi_device_id    *device_id,
                       struct device            *dev,