Revision a5e1baf7dca10f8cf945394034013260297bc416 authored by Heiko Stübner on 16 January 2015, 16:52:44 UTC, committed by Michael Turquette on 17 January 2015, 19:22:39 UTC
Lockdep reported a possible deadlock between the cpuclk lock and for example
the i2c driver.
CPU0 CPU1
---- ----
lock(clk_lock);
local_irq_disable();
lock(&(&i2c->lock)->rlock);
lock(clk_lock);
<Interrupt>
lock(&(&i2c->lock)->rlock);
*** DEADLOCK ***
The generic clock-types of the core ccf already use spin_lock_irqsave when
touching clock registers, so do the same for the cpuclk.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
[mturquette@linaro.org: removed initialization of "flags"]
1 parent b71e8ec
| File | Mode | Size |
|---|---|---|
| 3com | ||
| acenic | ||
| adaptec | ||
| advansys | ||
| av7110 | ||
| bnx2 | ||
| bnx2x | ||
| cis | ||
| cpia2 | ||
| cxgb3 | ||
| dsp56k | ||
| e100 | ||
| edgeport | ||
| emi26 | ||
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| ess | ||
| kaweth | ||
| keyspan | ||
| keyspan_pda | ||
| korg | ||
| matrox | ||
| myricom | ||
| ositech | ||
| qlogic | ||
| r128 | ||
| radeon | ||
| sb16 | ||
| sun | ||
| tehuti | ||
| tigon | ||
| ttusb-budget | ||
| vicam | ||
| yam | ||
| yamaha | ||
| .gitignore | -rw-r--r-- | 39 bytes |
| Makefile | -rw-r--r-- | 10.9 KB |
| README.AddingFirmware | -rw-r--r-- | 1.5 KB |
| WHENCE | -rw-r--r-- | 26.3 KB |
| atmsar11.HEX | -rw-r--r-- | 18.7 KB |
| ihex2fw.c | -rw-r--r-- | 6.6 KB |
| mts_cdma.fw.ihex | -rw-r--r-- | 37.2 KB |
| mts_edge.fw.ihex | -rw-r--r-- | 37.8 KB |
| mts_gsm.fw.ihex | -rw-r--r-- | 37.2 KB |
| ti_3410.fw.ihex | -rw-r--r-- | 37.0 KB |
| ti_5052.fw.ihex | -rw-r--r-- | 37.0 KB |
| whiteheat.HEX | -rw-r--r-- | 43.9 KB |
| whiteheat_loader.HEX | -rw-r--r-- | 11.8 KB |
| whiteheat_loader_debug.HEX | -rw-r--r-- | 17.2 KB |
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