[SCSI] aic7xxx: add const

This patch adds more const keywords where appropriate.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

13 files changed, 61 insertions, 66 deletions

diff --git a/drivers/scsi/aic7xxx/aic79xx.h b/drivers/scsi/aic7xxx/aic79xx.h
index 9c1484453d5f..be5558ab84ea 100644
--- a/drivers/scsi/aic7xxx/aic79xx.h
+++ b/drivers/scsi/aic7xxx/aic79xx.h
@@ -815,7 +815,7 @@ struct ahd_tmode_tstate {
 struct ahd_phase_table_entry {
         uint8_t phase;
         uint8_t mesg_out; /* Message response to parity errors */
-        char *phasemsg;
+        const char *phasemsg;
 };
 
 /************************** Serial EEPROM Format ******************************/
@@ -1335,9 +1335,9 @@ extern const int ahd_num_aic7770_devs;
 /******************************************************************************/
 
 /***************************** PCI Front End *********************************/
-struct  ahd_pci_identity *ahd_find_pci_device(ahd_dev_softc_t);
+const struct    ahd_pci_identity *ahd_find_pci_device(ahd_dev_softc_t);
 int                       ahd_pci_config(struct ahd_softc *,
-                                         struct ahd_pci_identity *);
+                                         const struct ahd_pci_identity *);
 int     ahd_pci_test_register_access(struct ahd_softc *);
 #ifdef CONFIG_PM
 void    ahd_pci_suspend(struct ahd_softc *);
diff --git a/drivers/scsi/aic7xxx/aic79xx_core.c b/drivers/scsi/aic7xxx/aic79xx_core.c
index 1e452cfa2390..55508b0fcec4 100644
--- a/drivers/scsi/aic7xxx/aic79xx_core.c
+++ b/drivers/scsi/aic7xxx/aic79xx_core.c
@@ -52,7 +52,7 @@
 
 
 /***************************** Lookup Tables **********************************/
-static char *ahd_chip_names[] =
+static const char *const ahd_chip_names[] =
 {
         "NONE",
         "aic7901",
@@ -66,10 +66,10 @@ static const u_int num_chip_names = ARRAY_SIZE(ahd_chip_names);
  */
 struct ahd_hard_error_entry {
         uint8_t errno;
-        char *errmesg;
+        const char *errmesg;
 };
 
-static struct ahd_hard_error_entry ahd_hard_errors[] = {
+static const struct ahd_hard_error_entry ahd_hard_errors[] = {
         { DSCTMOUT,     "Discard Timer has timed out" },
         { ILLOPCODE,    "Illegal Opcode in sequencer program" },
         { SQPARERR,     "Sequencer Parity Error" },
@@ -79,7 +79,7 @@ static struct ahd_hard_error_entry ahd_hard_errors[] = {
 };
 static const u_int num_errors = ARRAY_SIZE(ahd_hard_errors);
 
-static struct ahd_phase_table_entry ahd_phase_table[] =
+static const struct ahd_phase_table_entry ahd_phase_table[] =
 {
         { P_DATAOUT,    MSG_NOOP,               "in Data-out phase"     },
         { P_DATAIN,     MSG_INITIATOR_DET_ERR,  "in Data-in phase"      },
@@ -213,7 +213,7 @@ static void		ahd_dumpseq(struct ahd_softc *ahd);
 #endif
 static void             ahd_loadseq(struct ahd_softc *ahd);
 static int              ahd_check_patch(struct ahd_softc *ahd,
-                                        struct patch **start_patch,
+                                        const struct patch **start_patch,
                                         u_int start_instr, u_int *skip_addr);
 static u_int            ahd_resolve_seqaddr(struct ahd_softc *ahd,
                                             u_int address);
@@ -254,7 +254,7 @@ static void		ahd_freeze_devq(struct ahd_softc *ahd,
                                         struct scb *scb);
 static void             ahd_handle_scb_status(struct ahd_softc *ahd,
                                               struct scb *scb);
-static struct ahd_phase_table_entry* ahd_lookup_phase_entry(int phase);
+static const struct ahd_phase_table_entry* ahd_lookup_phase_entry(int phase);
 static void             ahd_shutdown(void *arg);
 static void             ahd_update_coalescing_values(struct ahd_softc *ahd,
                                                      u_int timer,
@@ -4337,11 +4337,11 @@ ahd_print_devinfo(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
                devinfo->target, devinfo->lun);
 }
 
-static struct ahd_phase_table_entry*
+static const struct ahd_phase_table_entry*
 ahd_lookup_phase_entry(int phase)
 {
-        struct ahd_phase_table_entry *entry;
-        struct ahd_phase_table_entry *last_entry;
+        const struct ahd_phase_table_entry *entry;
+        const struct ahd_phase_table_entry *last_entry;
 
         /*
          * num_phases doesn't include the default entry which
@@ -9354,7 +9354,7 @@ ahd_loadseq(struct ahd_softc *ahd)
         struct  cs cs_table[num_critical_sections];
         u_int   begin_set[num_critical_sections];
         u_int   end_set[num_critical_sections];
-        struct  patch *cur_patch;
+        const struct patch *cur_patch;
         u_int   cs_count;
         u_int   cur_cs;
         u_int   i;
@@ -9509,11 +9509,11 @@ ahd_loadseq(struct ahd_softc *ahd)
 }
 
 static int
-ahd_check_patch(struct ahd_softc *ahd, struct patch **start_patch,
+ahd_check_patch(struct ahd_softc *ahd, const struct patch **start_patch,
                 u_int start_instr, u_int *skip_addr)
 {
-        struct  patch *cur_patch;
-        struct  patch *last_patch;
+        const struct patch *cur_patch;
+        const struct patch *last_patch;
         u_int   num_patches;
 
         num_patches = ARRAY_SIZE(patches);
@@ -9547,7 +9547,7 @@ ahd_check_patch(struct ahd_softc *ahd, struct patch **start_patch,
 static u_int
 ahd_resolve_seqaddr(struct ahd_softc *ahd, u_int address)
 {
-        struct patch *cur_patch;
+        const struct patch *cur_patch;
         int address_offset;
         u_int skip_addr;
         u_int i;
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index ea0bbda47324..0f829b3b8ab7 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -193,7 +193,7 @@ struct ahd_linux_iocell_opts
 #define AIC79XX_PRECOMP_INDEX   0
 #define AIC79XX_SLEWRATE_INDEX  1
 #define AIC79XX_AMPLITUDE_INDEX 2
-static struct ahd_linux_iocell_opts aic79xx_iocell_info[] =
+static const struct ahd_linux_iocell_opts aic79xx_iocell_info[] =
 {
         AIC79XX_DEFAULT_IOOPTS,
         AIC79XX_DEFAULT_IOOPTS,
@@ -557,13 +557,11 @@ ahd_linux_info(struct Scsi_Host *host)
         bp = &buffer[0];
         ahd = *(struct ahd_softc **)host->hostdata;
         memset(bp, 0, sizeof(buffer));
-        strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
-        strcat(bp, AIC79XX_DRIVER_VERSION);
-        strcat(bp, "\n");
-        strcat(bp, "        <");
+        strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev " AIC79XX_DRIVER_VERSION "\n"
+                        "        <");
         strcat(bp, ahd->description);
-        strcat(bp, ">\n");
-        strcat(bp, "        ");
+        strcat(bp, ">\n"
+                        "        ");
         ahd_controller_info(ahd, ahd_info);
         strcat(bp, ahd_info);
 
@@ -1148,7 +1146,7 @@ aic79xx_setup(char *s)
         char   *p;
         char   *end;
 
-        static struct {
+        static const struct {
                 const char *name;
                 uint32_t *flag;
         } options[] = {
@@ -1380,7 +1378,7 @@ ahd_platform_init(struct ahd_softc *ahd)
          * Lookup and commit any modified IO Cell options.
          */
         if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) {
-                struct ahd_linux_iocell_opts *iocell_opts;
+                const struct ahd_linux_iocell_opts *iocell_opts;
 
                 iocell_opts = &aic79xx_iocell_info[ahd->unit];
                 if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP)
@@ -2770,7 +2768,7 @@ static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
                 uint8_t precomp;
 
                 if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) {
-                        struct ahd_linux_iocell_opts *iocell_opts;
+                        const struct ahd_linux_iocell_opts *iocell_opts;
 
                         iocell_opts = &aic79xx_iocell_info[ahd->unit];
                         precomp = iocell_opts->precomp;
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
index 9e0d7bdc889e..6593056867f6 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
@@ -49,7 +49,7 @@
         ID2C(x),         \
         ID2C(IDIROC(x))
 
-static struct pci_device_id ahd_linux_pci_id_table[] = {
+static const struct pci_device_id ahd_linux_pci_id_table[] = {
         /* aic7901 based controllers */
         ID(ID_AHA_29320A),
         ID(ID_AHA_29320ALP),
@@ -159,7 +159,7 @@ ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         char             buf[80];
         struct           ahd_softc *ahd;
         ahd_dev_softc_t  pci;
-        struct           ahd_pci_identity *entry;
+        const struct ahd_pci_identity *entry;
         char            *name;
         int              error;
         struct device   *dev = &pdev->dev;
diff --git a/drivers/scsi/aic7xxx/aic79xx_pci.c b/drivers/scsi/aic7xxx/aic79xx_pci.c
index 0bb352573f57..c25b6adffbf9 100644
--- a/drivers/scsi/aic7xxx/aic79xx_pci.c
+++ b/drivers/scsi/aic7xxx/aic79xx_pci.c
@@ -97,7 +97,7 @@ static ahd_device_setup_t ahd_aic7901A_setup;
 static ahd_device_setup_t ahd_aic7902_setup;
 static ahd_device_setup_t ahd_aic790X_setup;
 
-static struct ahd_pci_identity ahd_pci_ident_table[] =
+static const struct ahd_pci_identity ahd_pci_ident_table[] =
 {
         /* aic7901 based controllers */
         {
@@ -253,7 +253,7 @@ static void	ahd_configure_termination(struct ahd_softc *ahd,
 static void     ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat);
 static void     ahd_pci_intr(struct ahd_softc *ahd);
 
-struct ahd_pci_identity *
+const struct ahd_pci_identity *
 ahd_find_pci_device(ahd_dev_softc_t pci)
 {
         uint64_t  full_id;
@@ -261,7 +261,7 @@ ahd_find_pci_device(ahd_dev_softc_t pci)
         uint16_t  vendor;
         uint16_t  subdevice;
         uint16_t  subvendor;
-        struct    ahd_pci_identity *entry;
+        const struct ahd_pci_identity *entry;
         u_int     i;
 
         vendor = ahd_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
@@ -292,7 +292,7 @@ ahd_find_pci_device(ahd_dev_softc_t pci)
 }
 
 int
-ahd_pci_config(struct ahd_softc *ahd, struct ahd_pci_identity *entry)
+ahd_pci_config(struct ahd_softc *ahd, const struct ahd_pci_identity *entry)
 {
         struct scb_data *shared_scb_data;
         u_int            command;
diff --git a/drivers/scsi/aic7xxx/aic79xx_proc.c b/drivers/scsi/aic7xxx/aic79xx_proc.c
index 6b28bebcbca0..014bed716e7c 100644
--- a/drivers/scsi/aic7xxx/aic79xx_proc.c
+++ b/drivers/scsi/aic7xxx/aic79xx_proc.c
@@ -57,7 +57,7 @@ static int	ahd_proc_write_seeprom(struct ahd_softc *ahd,
  * Table of syncrates that don't follow the "divisible by 4"
  * rule. This table will be expanded in future SCSI specs.
  */
-static struct {
+static const struct {
         u_int period_factor;
         u_int period;   /* in 100ths of ns */
 } scsi_syncrates[] = {
diff --git a/drivers/scsi/aic7xxx/aic7xxx.h b/drivers/scsi/aic7xxx/aic7xxx.h
index 862e0fbffa42..e4e651cca3e4 100644
--- a/drivers/scsi/aic7xxx/aic7xxx.h
+++ b/drivers/scsi/aic7xxx/aic7xxx.h
@@ -1114,7 +1114,7 @@ typedef int (ahc_device_setup_t)(struct ahc_softc *);
 struct ahc_pci_identity {
         uint64_t                 full_id;
         uint64_t                 id_mask;
-        char                    *name;
+        const char              *name;
         ahc_device_setup_t      *setup;
 };
 
@@ -1135,9 +1135,9 @@ extern const int ahc_num_aic7770_devs;
 /******************************************************************************/
 
 /***************************** PCI Front End *********************************/
-struct ahc_pci_identity *ahc_find_pci_device(ahc_dev_softc_t);
+const struct ahc_pci_identity   *ahc_find_pci_device(ahc_dev_softc_t);
 int                      ahc_pci_config(struct ahc_softc *,
-                                        struct ahc_pci_identity *);
+                                        const struct ahc_pci_identity *);
 int                      ahc_pci_test_register_access(struct ahc_softc *);
 #ifdef CONFIG_PM
 void                     ahc_pci_resume(struct ahc_softc *ahc);
diff --git a/drivers/scsi/aic7xxx/aic7xxx_93cx6.c b/drivers/scsi/aic7xxx/aic7xxx_93cx6.c
index 3cb07e114e89..dd11999b77b6 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_93cx6.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_93cx6.c
@@ -84,16 +84,16 @@ struct seeprom_cmd {
 };
 
 /* Short opcodes for the c46 */
-static struct seeprom_cmd seeprom_ewen = {9, {1, 0, 0, 1, 1, 0, 0, 0, 0}};
-static struct seeprom_cmd seeprom_ewds = {9, {1, 0, 0, 0, 0, 0, 0, 0, 0}};
+static const struct seeprom_cmd seeprom_ewen = {9, {1, 0, 0, 1, 1, 0, 0, 0, 0}};
+static const struct seeprom_cmd seeprom_ewds = {9, {1, 0, 0, 0, 0, 0, 0, 0, 0}};
 
 /* Long opcodes for the C56/C66 */
-static struct seeprom_cmd seeprom_long_ewen = {11, {1, 0, 0, 1, 1, 0, 0, 0, 0}};
-static struct seeprom_cmd seeprom_long_ewds = {11, {1, 0, 0, 0, 0, 0, 0, 0, 0}};
+static const struct seeprom_cmd seeprom_long_ewen = {11, {1, 0, 0, 1, 1, 0, 0, 0, 0}};
+static const struct seeprom_cmd seeprom_long_ewds = {11, {1, 0, 0, 0, 0, 0, 0, 0, 0}};
 
 /* Common opcodes */
-static struct seeprom_cmd seeprom_write = {3, {1, 0, 1}};
-static struct seeprom_cmd seeprom_read  = {3, {1, 1, 0}};
+static const struct seeprom_cmd seeprom_write = {3, {1, 0, 1}};
+static const struct seeprom_cmd seeprom_read  = {3, {1, 1, 0}};
 
 /*
  * Wait for the SEERDY to go high; about 800 ns.
@@ -108,7 +108,7 @@ static struct seeprom_cmd seeprom_read  = {3, {1, 1, 0}};
  * Send a START condition and the given command
  */
 static void
-send_seeprom_cmd(struct seeprom_descriptor *sd, struct seeprom_cmd *cmd)
+send_seeprom_cmd(struct seeprom_descriptor *sd, const struct seeprom_cmd *cmd)
 {
         uint8_t temp;
         int i = 0;
@@ -227,7 +227,7 @@ int
 ahc_write_seeprom(struct seeprom_descriptor *sd, uint16_t *buf,
                   u_int start_addr, u_int count)
 {
-        struct seeprom_cmd *ewen, *ewds;
+        const struct seeprom_cmd *ewen, *ewds;
         uint16_t v;
         uint8_t temp;
         int i, k;
diff --git a/drivers/scsi/aic7xxx/aic7xxx_core.c b/drivers/scsi/aic7xxx/aic7xxx_core.c
index 62417ed17cf3..0ae2b4605d09 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_core.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_core.c
@@ -221,7 +221,7 @@ static void		ahc_dumpseq(struct ahc_softc *ahc);
 #endif
 static int              ahc_loadseq(struct ahc_softc *ahc);
 static int              ahc_check_patch(struct ahc_softc *ahc,
-                                        struct patch **start_patch,
+                                        const struct patch **start_patch,
                                         u_int start_instr, u_int *skip_addr);
 static void             ahc_download_instr(struct ahc_softc *ahc,
                                            u_int instrptr, uint8_t *dconsts);
@@ -6851,7 +6851,7 @@ ahc_loadseq(struct ahc_softc *ahc)
         struct  cs cs_table[num_critical_sections];
         u_int   begin_set[num_critical_sections];
         u_int   end_set[num_critical_sections];
-        struct  patch *cur_patch;
+        const struct patch *cur_patch;
         u_int   cs_count;
         u_int   cur_cs;
         u_int   i;
@@ -6956,11 +6956,11 @@ ahc_loadseq(struct ahc_softc *ahc)
 }
 
 static int
-ahc_check_patch(struct ahc_softc *ahc, struct patch **start_patch,
+ahc_check_patch(struct ahc_softc *ahc, const struct patch **start_patch,
                 u_int start_instr, u_int *skip_addr)
 {
-        struct  patch *cur_patch;
-        struct  patch *last_patch;
+        const struct patch *cur_patch;
+        const struct patch *last_patch;
         u_int   num_patches;
 
         num_patches = ARRAY_SIZE(patches);
@@ -7019,7 +7019,7 @@ ahc_download_instr(struct ahc_softc *ahc, u_int instrptr, uint8_t *dconsts)
         case AIC_OP_JE:
         case AIC_OP_JZ:
         {
-                struct patch *cur_patch;
+                const struct patch *cur_patch;
                 int address_offset;
                 u_int address;
                 u_int skip_addr;
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index 01118c3f56b5..fd2b9785ff4f 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -511,13 +511,11 @@ ahc_linux_info(struct Scsi_Host *host)
         bp = &buffer[0];
         ahc = *(struct ahc_softc **)host->hostdata;
         memset(bp, 0, sizeof(buffer));
-        strcpy(bp, "Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev ");
-        strcat(bp, AIC7XXX_DRIVER_VERSION);
-        strcat(bp, "\n");
-        strcat(bp, "        <");
+        strcpy(bp, "Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev " AIC7XXX_DRIVER_VERSION "\n"
+                        "        <");
         strcat(bp, ahc->description);
-        strcat(bp, ">\n");
-        strcat(bp, "        ");
+        strcat(bp, ">\n"
+                        "        ");
         ahc_controller_info(ahc, ahc_info);
         strcat(bp, ahc_info);
         strcat(bp, "\n");
@@ -1033,7 +1031,7 @@ aic7xxx_setup(char *s)
         char   *p;
         char   *end;
 
-        static struct {
+        static const struct {
                 const char *name;
                 uint32_t *flag;
         } options[] = {
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
index 950a046788f0..0d7628f1f1ef 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
@@ -46,7 +46,7 @@
 */
 #define ID(x)   ID_C(x, PCI_CLASS_STORAGE_SCSI)
 
-static struct pci_device_id ahc_linux_pci_id_table[] = {
+static const struct pci_device_id ahc_linux_pci_id_table[] = {
         /* aic7850 based controllers */
         ID(ID_AHA_2902_04_10_15_20C_30C),
         /* aic7860 based controllers */
@@ -206,7 +206,7 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         const uint64_t   mask_39bit = 0x7FFFFFFFFFULL;
         struct           ahc_softc *ahc;
         ahc_dev_softc_t  pci;
-        struct           ahc_pci_identity *entry;
+        const struct ahc_pci_identity *entry;
         char            *name;
         int              error;
         struct device   *dev = &pdev->dev;
diff --git a/drivers/scsi/aic7xxx/aic7xxx_pci.c b/drivers/scsi/aic7xxx/aic7xxx_pci.c
index 56848f41e4f9..c07cb6eebb02 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_pci.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_pci.c
@@ -168,8 +168,7 @@ static ahc_device_setup_t ahc_aha394XX_setup;
 static ahc_device_setup_t ahc_aha494XX_setup;
 static ahc_device_setup_t ahc_aha398XX_setup;
 
-static struct ahc_pci_identity ahc_pci_ident_table [] =
-{
+static const struct ahc_pci_identity ahc_pci_ident_table[] = {
         /* aic7850 based controllers */
         {
                 ID_AHA_2902_04_10_15_20C_30C,
@@ -668,7 +667,7 @@ ahc_9005_subdevinfo_valid(uint16_t device, uint16_t vendor,
         return (result);
 }
 
-struct ahc_pci_identity *
+const struct ahc_pci_identity *
 ahc_find_pci_device(ahc_dev_softc_t pci)
 {
         uint64_t  full_id;
@@ -676,7 +675,7 @@ ahc_find_pci_device(ahc_dev_softc_t pci)
         uint16_t  vendor;
         uint16_t  subdevice;
         uint16_t  subvendor;
-        struct    ahc_pci_identity *entry;
+        const struct ahc_pci_identity *entry;
         u_int     i;
 
         vendor = ahc_pci_read_config(pci, PCIR_DEVVENDOR, /*bytes*/2);
@@ -710,7 +709,7 @@ ahc_find_pci_device(ahc_dev_softc_t pci)
 }
 
 int
-ahc_pci_config(struct ahc_softc *ahc, struct ahc_pci_identity *entry)
+ahc_pci_config(struct ahc_softc *ahc, const struct ahc_pci_identity *entry)
 {
         u_int    command;
         u_int    our_id;
diff --git a/drivers/scsi/aic7xxx/aic7xxx_proc.c b/drivers/scsi/aic7xxx/aic7xxx_proc.c
index 3afa34c7c591..e92991a7c485 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_proc.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_proc.c
@@ -58,7 +58,7 @@ static int	ahc_proc_write_seeprom(struct ahc_softc *ahc,
  * Table of syncrates that don't follow the "divisible by 4"
  * rule. This table will be expanded in future SCSI specs.
  */
-static struct {
+static const struct {
         u_int period_factor;
         u_int period;   /* in 100ths of ns */
 } scsi_syncrates[] = {