[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 3/4] minios: clean up unneeded "err = NULL" in frontend drivers
From: Ben Cressey <bcressey@xxxxxxxxxx> This patch removes cases where the error message pointer is already NULL and is then set to NULL. These are harmless, but suggest incorrect practice: the pointer should be passed to free() to deallocate memory prior to reassignment. There are no functional changes in this patch. Signed-off-by: Ben Cressey <bcressey@xxxxxxxxxx> Reviewed-by: Matt Wilson <msw@xxxxxxxxxx> Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> Acked-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx> [msw: split a larger patch from Ben into this cleanup patch] Signed-off-by: Matt Wilson <msw@xxxxxxxxxx> --- extras/mini-os/blkfront.c | 1 - extras/mini-os/fbfront.c | 3 --- extras/mini-os/netfront.c | 1 - extras/mini-os/pcifront.c | 1 - 4 files changed, 6 deletions(-) diff --git a/extras/mini-os/blkfront.c b/extras/mini-os/blkfront.c index 73837f6..dd5e95f 100644 --- a/extras/mini-os/blkfront.c +++ b/extras/mini-os/blkfront.c @@ -289,7 +289,6 @@ void shutdown_blkfront(struct blkfront_dev *dev) XenbusStateInitialising, err); goto close; } - err = NULL; state = xenbus_read_integer(path); while (err == NULL && (state < XenbusStateInitWait || state >= XenbusStateClosed)) err = xenbus_wait_for_state_change(path, &state, &dev->events); diff --git a/extras/mini-os/fbfront.c b/extras/mini-os/fbfront.c index 9148496..8b4466a 100644 --- a/extras/mini-os/fbfront.c +++ b/extras/mini-os/fbfront.c @@ -272,7 +272,6 @@ void shutdown_kbdfront(struct kbdfront_dev *dev) XenbusStateInitialising, err); goto close_kbdfront; } - err = NULL; state = xenbus_read_integer(path); while (err == NULL && (state < XenbusStateInitWait || state >= XenbusStateClosed)) err = xenbus_wait_for_state_change(path, &state, &dev->events); @@ -664,8 +663,6 @@ void shutdown_fbfront(struct fbfront_dev *dev) XenbusStateInitialising, err); goto close_fbfront; } - - err = NULL; state = xenbus_read_integer(path); while (err == NULL && (state < XenbusStateInitWait || state >= XenbusStateClosed)) err = xenbus_wait_for_state_change(path, &state, &dev->events); diff --git a/extras/mini-os/netfront.c b/extras/mini-os/netfront.c index 7947fc2..dc29f14 100644 --- a/extras/mini-os/netfront.c +++ b/extras/mini-os/netfront.c @@ -541,7 +541,6 @@ void shutdown_netfront(struct netfront_dev *dev) XenbusStateInitialising, err); goto close; } - err = NULL; state = xenbus_read_integer(path); while (err == NULL && (state < XenbusStateInitWait || state >= XenbusStateClosed)) err = xenbus_wait_for_state_change(path, &state, &dev->events); diff --git a/extras/mini-os/pcifront.c b/extras/mini-os/pcifront.c index e6a5f4e..df300b5 100644 --- a/extras/mini-os/pcifront.c +++ b/extras/mini-os/pcifront.c @@ -355,7 +355,6 @@ void shutdown_pcifront(struct pcifront_dev *dev) XenbusStateInitialising, err); goto close_pcifront; } - err = NULL; state = xenbus_read_integer(path); while (err == NULL && (state < XenbusStateInitWait || state >= XenbusStateClosed)) err = xenbus_wait_for_state_change(path, &state, &dev->events); -- 1.7.9.5 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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