From a032d33b65c89a781c871fd1def595fa6a69b52a Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Fri, 3 Aug 2012 09:21:10 -0600 Subject: ARM: OMAP: clean up some smatch warnings, fix some printk(KERN_ERR ... Resolve the following warnings from smatch: arch/arm/mach-omap2/gpmc.c:282 gpmc_cs_set_timings() info: why not propagate 'div' from gpmc_cs_calc_divider() instead of -1? arch/arm/mach-omap2/serial.c:328 omap_serial_init_port() error: 'pdev' dereferencing possible ERR_PTR() arch/arm/mach-omap2/timer.c:213 omap2_gp_clockevent_init() Error invalid range 4096 to -1 arch/arm/mach-omap2/gpio.c:63 omap2_gpio_dev_init() warn: possible memory leak of 'pdata' arch/arm/mach-omap2/omap_hwmod.c:1478 _assert_hardreset() warn: assigning -22 to unsigned variable 'ret' arch/arm/mach-omap2/omap_hwmod.c:1487 _assert_hardreset() warn: 4294963201 is more than 255 (max '(ret)' can be) so this is always the same. arch/arm/mach-omap2/omap_hwmod.c:1545 _read_hardreset() warn: assigning -22 to unsigned variable 'ret' arch/arm/mach-omap2/omap_hwmod.c:1554 _read_hardreset() warn: 4294963201 is more than 255 (max '(ret)' can be) so this is always the same. arch/arm/mach-omap2/dpll3xxx.c:629 omap3_clkoutx2_recalc() error: we previously assumed 'pclk' could be null (see line 627) arch/arm/mach-omap2/board-n8x0.c:422 n8x0_mmc_late_init() Error invalid range 14 to 13 arch/arm/mach-omap1/leds-h2p2-debug.c:71 h2p2_dbg_leds_event() error: potentially derefencing uninitialized 'fpga'. arch/arm/plat-omap/mux.c:79 omap_cfg_reg() Error invalid range 4096 to -1 Thanks to Tony Lindgren for pointing out that BUG() can be disabled. The changes in the first version that removed the subsequent return() after BUG() states have been dropped. Signed-off-by: Paul Walmsley Cc: Tony Lindgren --- arch/arm/mach-omap1/leds-h2p2-debug.c | 12 +++++++----- arch/arm/mach-omap2/dpll3xxx.c | 7 +++++-- arch/arm/mach-omap2/gpio.c | 1 + arch/arm/mach-omap2/gpmc.c | 2 +- arch/arm/mach-omap2/omap_hwmod.c | 12 ++++++------ arch/arm/mach-omap2/serial.c | 7 +++++-- arch/arm/mach-omap2/timer.c | 2 +- arch/arm/plat-omap/mux.c | 2 +- 8 files changed, 27 insertions(+), 18 deletions(-) diff --git a/arch/arm/mach-omap1/leds-h2p2-debug.c b/arch/arm/mach-omap1/leds-h2p2-debug.c index f6b14a1..78acaa9 100644 --- a/arch/arm/mach-omap1/leds-h2p2-debug.c +++ b/arch/arm/mach-omap1/leds-h2p2-debug.c @@ -68,11 +68,13 @@ void h2p2_dbg_leds_event(led_event_t evt) gpio_set_value(GPIO_IDLE, 0); } - __raw_writew(~0, &fpga->leds); led_state &= ~LED_STATE_ENABLED; - if (evt == led_halted) { - iounmap(fpga); - fpga = NULL; + if (fpga) { + __raw_writew(~0, &fpga->leds); + if (evt == led_halted) { + iounmap(fpga); + fpga = NULL; + } } goto done; @@ -158,7 +160,7 @@ void h2p2_dbg_leds_event(led_event_t evt) /* * Actually burn the LEDs */ - if (led_state & LED_STATE_ENABLED) + if (led_state & LED_STATE_ENABLED && fpga) __raw_writew(~hw_led_state, &fpga->leds); done: diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c index b9c8d2f..4d0e645 100644 --- a/arch/arm/mach-omap2/dpll3xxx.c +++ b/arch/arm/mach-omap2/dpll3xxx.c @@ -623,8 +623,11 @@ unsigned long omap3_clkoutx2_recalc(struct clk *clk) while (pclk && !pclk->dpll_data) pclk = pclk->parent; - /* clk does not have a DPLL as a parent? */ - WARN_ON(!pclk); + /* clk does not have a DPLL as a parent? error in the clock data */ + if (!pclk) { + WARN_ON(1); + return 0; + } dd = pclk->dpll_data; diff --git a/arch/arm/mach-omap2/gpio.c b/arch/arm/mach-omap2/gpio.c index 9ad7d48..30a3a94 100644 --- a/arch/arm/mach-omap2/gpio.c +++ b/arch/arm/mach-omap2/gpio.c @@ -60,6 +60,7 @@ static int __init omap2_gpio_dev_init(struct omap_hwmod *oh, void *unused) pdata->regs = kzalloc(sizeof(struct omap_gpio_reg_offs), GFP_KERNEL); if (!pdata->regs) { pr_err("gpio%d: Memory allocation failed\n", id); + kfree(pdata); return -ENOMEM; } diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index b2b5759..f682e07 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -279,7 +279,7 @@ int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t) div = gpmc_cs_calc_divider(cs, t->sync_clk); if (div < 0) - return -1; + return div; GPMC_SET_ONE(GPMC_CS_CONFIG2, 0, 3, cs_on); GPMC_SET_ONE(GPMC_CS_CONFIG2, 8, 12, cs_rd_off); diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 6ca8e51..bd69eae 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -1438,8 +1438,8 @@ static int _init_clocks(struct omap_hwmod *oh, void *data) * Return the bit position of the reset line that match the * input name. Return -ENOENT if not found. */ -static u8 _lookup_hardreset(struct omap_hwmod *oh, const char *name, - struct omap_hwmod_rst_info *ohri) +static int _lookup_hardreset(struct omap_hwmod *oh, const char *name, + struct omap_hwmod_rst_info *ohri) { int i; @@ -1475,7 +1475,7 @@ static u8 _lookup_hardreset(struct omap_hwmod *oh, const char *name, static int _assert_hardreset(struct omap_hwmod *oh, const char *name) { struct omap_hwmod_rst_info ohri; - u8 ret = -EINVAL; + int ret = -EINVAL; if (!oh) return -EINVAL; @@ -1484,7 +1484,7 @@ static int _assert_hardreset(struct omap_hwmod *oh, const char *name) return -ENOSYS; ret = _lookup_hardreset(oh, name, &ohri); - if (IS_ERR_VALUE(ret)) + if (ret < 0) return ret; ret = soc_ops.assert_hardreset(oh, &ohri); @@ -1542,7 +1542,7 @@ static int _deassert_hardreset(struct omap_hwmod *oh, const char *name) static int _read_hardreset(struct omap_hwmod *oh, const char *name) { struct omap_hwmod_rst_info ohri; - u8 ret = -EINVAL; + int ret = -EINVAL; if (!oh) return -EINVAL; @@ -1551,7 +1551,7 @@ static int _read_hardreset(struct omap_hwmod *oh, const char *name) return -ENOSYS; ret = _lookup_hardreset(oh, name, &ohri); - if (IS_ERR_VALUE(ret)) + if (ret < 0) return ret; return soc_ops.is_hardreset_asserted(oh, &ohri); diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index c1b93c7..0cc79d3 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -313,8 +313,11 @@ void __init omap_serial_init_port(struct omap_board_data *bdata, pdev = omap_device_build(name, uart->num, oh, pdata, pdata_size, NULL, 0, false); - WARN(IS_ERR(pdev), "Could not build omap_device for %s: %s.\n", - name, oh->name); + if (IS_ERR(pdev)) { + WARN(1, "Could not build omap_device for %s: %s.\n", name, + oh->name); + return; + } if ((console_uart_id == bdata->id) && no_console_suspend) omap_device_disable_idle_on_suspend(pdev); diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c index 2ff6d41..7e688c7 100644 --- a/arch/arm/mach-omap2/timer.c +++ b/arch/arm/mach-omap2/timer.c @@ -211,7 +211,7 @@ static void __init omap2_gp_clockevent_init(int gptimer_id, res = omap_dm_timer_init_one(&clkev, gptimer_id, fck_source); BUG_ON(res); - omap2_gp_timer_irq.dev_id = (void *)&clkev; + omap2_gp_timer_irq.dev_id = &clkev; setup_irq(clkev.irq, &omap2_gp_timer_irq); __omap_dm_timer_int_enable(&clkev, OMAP_TIMER_INT_OVERFLOW); diff --git a/arch/arm/plat-omap/mux.c b/arch/arm/plat-omap/mux.c index cff8712..fd0d3aa 100644 --- a/arch/arm/plat-omap/mux.c +++ b/arch/arm/plat-omap/mux.c @@ -76,7 +76,7 @@ int __init_or_module omap_cfg_reg(const unsigned long index) return -ENODEV; } - reg = (struct pin_config *)&mux_cfg->pins[index]; + reg = &mux_cfg->pins[index]; if (!mux_cfg->cfg_reg) return -ENODEV; -- cgit v1.1