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uart: uart_cpu_arm64: fix the build without FDT

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clang 14 doesn't properly determine that we're unconditionally returning
if we have ACPI but not FDT.  Push FDT setup entirely into a new
function, much like we currently do with ACPI, and just return ENXIO if
that doesn't succeed.

Reviewed by:	andrew, manu (earlier version)
Differential Revision:	https://reviews.freebsd.org/D36788
This commit is contained in:
Kyle Evans 2022-09-29 14:33:32 -05:00
parent 79794d5c18
commit 4a4ad02da3
1 changed files with 31 additions and 21 deletions
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52
sys/dev/uart/uart_cpu_arm64.c
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@ -79,33 +79,17 @@ uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
return ((pmap_kextract(b1->bsh) == pmap_kextract(b2->bsh)) ? 1 : 0);
}
int
uart_cpu_getdev(int devtype, struct uart_devinfo *di)
#ifdef FDT
static int
uart_cpu_fdt_setup(struct uart_class *class, int devtype, struct uart_devinfo *di)
{
struct uart_class *class;
bus_space_handle_t bsh;
bus_space_tag_t bst;
u_int rclk, shift, iowidth;
int br, err;
/* Allow overriding the FDT using the environment. */
class = &uart_ns8250_class;
err = uart_getenv(devtype, di, class);
if (err == 0)
return (0);
#ifdef DEV_ACPI
/* Check if SPCR can tell us what console to use. */
if (uart_cpu_acpi_spcr(devtype, di) == 0)
return (0);
#endif
err = ENXIO;
#ifdef FDT
if (err != 0) {
err = uart_cpu_fdt_probe(&class, &bst, &bsh, &br, &rclk,
&shift, &iowidth, devtype);
}
#endif
err = uart_cpu_fdt_probe(&class, &bst, &bsh, &br, &rclk,
&shift, &iowidth, devtype);
if (err != 0)
return (err);
@ -128,3 +112,29 @@ uart_cpu_getdev(int devtype, struct uart_devinfo *di)
return (0);
}
#endif
int
uart_cpu_getdev(int devtype, struct uart_devinfo *di)
{
struct uart_class *class;
int err;
/* Allow overriding ACPI/FDT using the environment. */
class = &uart_ns8250_class;
err = uart_getenv(devtype, di, class);
if (err == 0)
return (0);
#ifdef DEV_ACPI
/* Check if SPCR can tell us what console to use. */
if (uart_cpu_acpi_spcr(devtype, di) == 0)
return (0);
#endif
#ifdef FDT
if (uart_cpu_fdt_setup(class, devtype, di) == 0)
return (0);
#endif
return (ENXIO);
}