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FPGA Configuration Space
Commit 0ea21f06 authored by Wesley W. Terpstra's avatar Wesley W. Terpstra
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wishbone: do like other devices drivers and allow syscall interruption

parent 2ffc716f
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Showing with 8 additions and 4 deletions
pcie-wb/wishbone.c
View file @ 0ea21f06
......@@ -380,7 +380,8 @@ static ssize_t char_master_aio_read(struct kiocb *iocb, const struct iovec *iov,
iov_len = iov_length(iov, nr_segs);
if (unlikely(iov_len == 0)) return 0;
mutex_lock(&context->mutex);
if (mutex_lock_interruptible(&context->mutex))
return -EINTR;
ring_len = RING_READ_LEN(context);
len = min_t(unsigned int, ring_len, iov_len);
......@@ -417,7 +418,8 @@ static ssize_t char_master_aio_write(struct kiocb *iocb, const struct iovec *iov
iov_len = iov_length(iov, nr_segs);
if (unlikely(iov_len == 0)) return 0;
mutex_lock(&context->mutex);
if (mutex_lock_interruptible(&context->mutex))
return -EINTR;
ring_len = RING_WRITE_LEN(context);
len = min_t(unsigned int, ring_len, iov_len);
......@@ -594,7 +596,8 @@ static ssize_t char_slave_aio_read(struct kiocb *iocb, const struct iovec *iov,
iov_len = iov_length(iov, nr_segs);
if (unlikely(iov_len == 0)) return 0;
mutex_lock(&context->mutex);
if (mutex_lock_interruptible(&context->mutex))
return -EINTR;
buf_len = context->rbuf_end - context->rbuf_done;
if (buf_len > iov_len) {
......@@ -623,7 +626,8 @@ static ssize_t char_slave_aio_write(struct kiocb *iocb, const struct iovec *iov,
outlen = iov_length(iov, nr_segs);
mutex_lock(&context->mutex);
if (mutex_lock_interruptible(&context->mutex))
return -EINTR;
for (iov_off = 0, iov_len = outlen; iov_len > 0; iov_off += len, iov_len -= len) {
/* Optimization to avoid quadratic complexity */
......
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