diff options
Diffstat (limited to 'sys/dev/extres/clk/clk_div.c')
| -rw-r--r-- | sys/dev/extres/clk/clk_div.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/sys/dev/extres/clk/clk_div.c b/sys/dev/extres/clk/clk_div.c index fcb0a57..51cc838 100644 --- a/sys/dev/extres/clk/clk_div.c +++ b/sys/dev/extres/clk/clk_div.c @@ -46,6 +46,10 @@ __FBSDID("$FreeBSD$"); CLKDEV_READ_4(clknode_get_device(_clk), off, val) #define MD4(_clk, off, clr, set ) \ CLKDEV_MODIFY_4(clknode_get_device(_clk), off, clr, set) +#define DEVICE_LOCK(_clk) \ + CLKDEV_DEVICE_LOCK(clknode_get_device(_clk)) +#define DEVICE_UNLOCK(_clk) \ + CLKDEV_DEVICE_UNLOCK(clknode_get_device(_clk)) static int clknode_div_init(struct clknode *clk, device_t dev); static int clknode_div_recalc(struct clknode *clk, uint64_t *req); @@ -86,7 +90,9 @@ clknode_div_init(struct clknode *clk, device_t dev) sc = clknode_get_softc(clk); + DEVICE_LOCK(clk); rv = RD4(clk, sc->offset, ®); + DEVICE_UNLOCK(clk); if (rv != 0) return (rv); @@ -171,12 +177,17 @@ clknode_div_set_freq(struct clknode *clk, uint64_t fin, uint64_t *fout, (*fout != (_fin / divider))) return (ERANGE); + DEVICE_LOCK(clk); rv = MD4(clk, sc->offset, (sc->i_mask << sc->i_shift) | (sc->f_mask << sc->f_shift), (i_div << sc->i_shift) | (f_div << sc->f_shift)); - if (rv != 0) + if (rv != 0) { + DEVICE_UNLOCK(clk); return (rv); + } RD4(clk, sc->offset, ®); + DEVICE_UNLOCK(clk); + sc->divider = divider; } |
