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path: root/drivers/fmc/fmc-chardev.c
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2013-07-24FMC: fix locking in sample chardev driverAlessandro Rubini
The fmc-chardev module was over-locking, by calling misc register/unregister while holding its spinlock. This reported a "scheduling while atomic" error. Since the misc driver already serializes operations internally, this commit downgrades the fmc-chardev lock to just cover its own list. Reported-by: Sasha Levin <sasha.levin@oracle.com> Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-24FMC: fix error handling in probe() functionDan Carpenter
The call to kzalloc() wasn't checked. The dev_info() message dereferenced freed memory on error. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Alessandro Rubini <rubini@gnudd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-18FMC: add a char-device mezzanine driverAlessandro Rubini
This driver exports the memory area associated with the mezzanine card as a misc device, so users can access registers. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Acked-by: Juan David Gonzalez Cobas <dcobas@cern.ch> Acked-by: Emilio G. Cota <cota@braap.org> Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>