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Cleanup and simplify handle_interface_command:

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- Reduce indent: invert logic of strcmp test.
- Reduce scope: declare variables upon first use in loops.
- Reduce unsaid: compare end of table with NULL.
- Remove superfluous braces around blocks with one statment.
- Improve language that introduces the list of built-in drivers.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2128 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
zwelch 2009-06-08 13:12:12 +00:00
parent 8290a05c2b
commit 7bcd2e6854
1 changed files with 23 additions and 38 deletions
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61
src/jtag/jtag.c
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@ -1796,11 +1796,9 @@ static int default_srst_asserted(int *srst_asserted)
return ERROR_OK;
}
static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
static int handle_interface_command(struct command_context_s *cmd_ctx,
char *cmd, char **args, int argc)
{
int i;
int retval;
/* check whether the interface is already configured */
if (jtag_interface)
{
@ -1809,52 +1807,39 @@ static int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd
}
/* interface name is a mandatory argument */
if (argc < 1 || args[0][0] == '\0')
{
if (argc != 1 || args[0][0] == '\0')
return ERROR_COMMAND_SYNTAX_ERROR;
}
for (i=0; jtag_interfaces[i]; i++)
for (unsigned i = 0; NULL != jtag_interfaces[i]; i++)
{
if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
{
if ((retval = jtag_interfaces[i]->register_commands(cmd_ctx)) != ERROR_OK)
{
if (strcmp(args[0], jtag_interfaces[i]->name) != 0)
continue;
int retval = jtag_interfaces[i]->register_commands(cmd_ctx);
if (ERROR_OK != retval)
return retval;
}
jtag_interface = jtag_interfaces[i];
jtag_interface = jtag_interfaces[i];
if (jtag_interface->khz == NULL)
{
jtag_interface->khz = default_khz;
}
if (jtag_interface->speed_div == NULL)
{
jtag_interface->speed_div = default_speed_div;
}
if (jtag_interface->power_dropout == NULL)
{
jtag_interface->power_dropout = default_power_dropout;
}
if (jtag_interface->srst_asserted == NULL)
{
jtag_interface->srst_asserted = default_srst_asserted;
}
if (jtag_interface->khz == NULL)
jtag_interface->khz = default_khz;
if (jtag_interface->speed_div == NULL)
jtag_interface->speed_div = default_speed_div;
if (jtag_interface->power_dropout == NULL)
jtag_interface->power_dropout = default_power_dropout;
if (jtag_interface->srst_asserted == NULL)
jtag_interface->srst_asserted = default_srst_asserted;
return ERROR_OK;
}
return ERROR_OK;
}
/* no valid interface was found (i.e. the configuration option,
* didn't match one of the compiled-in interfaces
*/
LOG_ERROR("No valid jtag interface found (%s)", args[0]);
LOG_ERROR("compiled-in jtag interfaces:");
for (i = 0; jtag_interfaces[i]; i++)
{
LOG_ERROR("%i: %s", i, jtag_interfaces[i]->name);
}
LOG_ERROR("The specified JTAG interface was not found (%s)", args[0]);
LOG_ERROR("The following built-in JTAG interfaces are available:");
for (unsigned i = 0; NULL != jtag_interfaces[i]; i++)
LOG_ERROR("%u: %s", i, jtag_interfaces[i]->name);
return ERROR_JTAG_INVALID_INTERFACE;
}