diff options
Diffstat (limited to 'drivers/serial/mpc52xx_uart.c')
| -rw-r--r-- | drivers/serial/mpc52xx_uart.c | 38 |
1 files changed, 10 insertions, 28 deletions
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index 0c3a2ab1612c..d73d7da3f304 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -50,8 +50,8 @@ /* OF Platform device Usage : * * This driver is only used for PSCs configured in uart mode. The device - * tree will have a node for each PSC in uart mode w/ device_type = "serial" - * and "mpc52xx-psc-uart" in the compatible string + * tree will have a node for each PSC with "mpc52xx-psc-uart" in the compatible + * list. * * By default, PSC devices are enumerated in the order they are found. However * a particular PSC number can be forces by adding 'device_no = <port#>' @@ -1212,30 +1212,18 @@ mpc52xx_uart_of_resume(struct of_device *op) #endif static void -mpc52xx_uart_of_assign(struct device_node *np, int idx) +mpc52xx_uart_of_assign(struct device_node *np) { - int free_idx = -1; int i; - /* Find the first free node */ + /* Find the first free PSC number */ for (i = 0; i < MPC52xx_PSC_MAXNUM; i++) { if (mpc52xx_uart_nodes[i] == NULL) { - free_idx = i; - break; + of_node_get(np); + mpc52xx_uart_nodes[i] = np; + return; } } - - if ((idx < 0) || (idx >= MPC52xx_PSC_MAXNUM)) - idx = free_idx; - - if (idx < 0) - return; /* No free slot; abort */ - - of_node_get(np); - /* If the slot is already occupied, then swap slots */ - if (mpc52xx_uart_nodes[idx] && (free_idx != -1)) - mpc52xx_uart_nodes[free_idx] = mpc52xx_uart_nodes[idx]; - mpc52xx_uart_nodes[idx] = np; } static void @@ -1243,23 +1231,17 @@ mpc52xx_uart_of_enumerate(void) { static int enum_done; struct device_node *np; - const unsigned int *devno; const struct of_device_id *match; int i; if (enum_done) return; - for_each_node_by_type(np, "serial") { + /* Assign index to each PSC in device tree */ + for_each_matching_node(np, mpc52xx_uart_of_match) { match = of_match_node(mpc52xx_uart_of_match, np); - if (!match) - continue; - psc_ops = match->data; - - /* Is a particular device number requested? */ - devno = of_get_property(np, "port-number", NULL); - mpc52xx_uart_of_assign(np, devno ? *devno : -1); + mpc52xx_uart_of_assign(np); } enum_done = 1; |