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[174.0.186.197]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8434accbc89sm14125521b3a.15.2026.06.16.12.07.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jun 2026 12:07:12 -0700 (PDT) From: Jack Lee To: dtwlin@gmail.com, johan@kernel.org, elder@kernel.org, gregkh@linuxfoundation.org Cc: greybus-dev@lists.linaro.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Jack Lee Subject: [PATCH] staging: greybus: uart: replace IDR with XArray Date: Tue, 16 Jun 2026 12:07:03 -0700 Message-ID: <20260616190703.28411-1-skunkolee@gmail.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit DEFINE_IDR is deprecated in favor of XArray. Convert tty_minors from IDR to XArray, replacing idr_alloc, idr_find, idr_remove and idr_destroy with their xa_alloc, xa_load, xa_erase and xa_destroy equivalents. Signed-off-by: Jack Lee --- drivers/staging/greybus/uart.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c index 7d060b4cd33d..30afcd0caa14 100644 --- a/drivers/staging/greybus/uart.c +++ b/drivers/staging/greybus/uart.c @@ -22,13 +22,13 @@ #include #include #include -#include #include #include #include #include #include #include +#include #include "gbphy.h" @@ -67,7 +67,7 @@ struct gb_tty { }; static struct tty_driver *gb_tty_driver; -static DEFINE_IDR(tty_minors); +static DEFINE_XARRAY_ALLOC(tty_minors); static DEFINE_MUTEX(table_lock); static int gb_uart_receive_data_handler(struct gb_operation *op) @@ -342,7 +342,7 @@ static struct gb_tty *get_gb_by_minor(unsigned int minor) struct gb_tty *gb_tty; mutex_lock(&table_lock); - gb_tty = idr_find(&tty_minors, minor); + gb_tty = xa_load(&tty_minors, minor); if (gb_tty) { mutex_lock(&gb_tty->mutex); if (gb_tty->disconnected) { @@ -359,14 +359,13 @@ static struct gb_tty *get_gb_by_minor(unsigned int minor) static int alloc_minor(struct gb_tty *gb_tty) { - int minor; + int ret; - mutex_lock(&table_lock); - minor = idr_alloc(&tty_minors, gb_tty, 0, GB_NUM_MINORS, GFP_KERNEL); - mutex_unlock(&table_lock); - if (minor >= 0) - gb_tty->minor = minor; - return minor; + ret = xa_alloc(&tty_minors, &gb_tty->minor, gb_tty, + XA_LIMIT(0, GB_NUM_MINORS - 1), GFP_KERNEL); + if (ret) + return ret; + return gb_tty->minor; } static void release_minor(struct gb_tty *gb_tty) @@ -375,7 +374,7 @@ static void release_minor(struct gb_tty *gb_tty) gb_tty->minor = 0; /* Maybe should use an invalid value instead */ mutex_lock(&table_lock); - idr_remove(&tty_minors, minor); + xa_erase(&tty_minors, minor); mutex_unlock(&table_lock); } @@ -984,7 +983,7 @@ static void gb_tty_exit(void) { tty_unregister_driver(gb_tty_driver); tty_driver_kref_put(gb_tty_driver); - idr_destroy(&tty_minors); + xa_destroy(&tty_minors); } static const struct gbphy_device_id gb_uart_id_table[] = { -- 2.54.0